<SUBMISSION>
<ACCESSION-NUMBER>0000950153-06-000235
<TYPE>424B3
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20060203
<DATE-OF-FILING-DATE-CHANGE>20060203
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>CSKAUTO COM INC
<CIK>0001166803
<IRS-NUMBER>860951003
<STATE-OF-INCORPORATION>DE
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>424B3
<ACT>33
<FILE-NUMBER>333-128775-01
<FILM-NUMBER>06578260
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>645 E. MISSOURI AVE.
<STREET2>SUITE 400
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
</BUSINESS-ADDRESS>
</FILER>
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>MDAS Inc.
<CIK>0001349321
<IRS-NUMBER>133855320
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0129
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>424B3
<ACT>33
<FILE-NUMBER>333-128775-05
<FILM-NUMBER>06578256
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<BUSINESS-ADDRESS>
<STREET1>645 E. MISSOURI AVENUE, SUITE 400
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
<PHONE>(602) 265-9200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>645 E. MISSOURI AVENUE, SUITE 400
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
</MAIL-ADDRESS>
</FILER>
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>Murrays Discount Auto Stores, Inc.
<CIK>0001349322
<IRS-NUMBER>383254563
<STATE-OF-INCORPORATION>MI
<FISCAL-YEAR-END>0129
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>424B3
<ACT>33
<FILE-NUMBER>333-128775-08
<FILM-NUMBER>06578259
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>645 E. MISSOURI AVENUE, SUITE 400
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
<PHONE>(602) 265-9200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>645 E. MISSOURI AVENUE, SUITE 400
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
</MAIL-ADDRESS>
</FILER>
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>CSK AUTO CORP
<CIK>0001051848
<ASSIGNED-SIC>5531
<IRS-NUMBER>860765798
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0131
</COMPANY-DATA>
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<FILE-NUMBER>333-128775
<FILM-NUMBER>06578255
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<BUSINESS-ADDRESS>
<STREET1>645 E MISSOURI AVENUE
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
<PHONE>6022659200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>645 E MISSOURI AVENUE
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
</MAIL-ADDRESS>
</FILER>
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>CSK AUTO INC
<CIK>0001017450
<ASSIGNED-SIC>5531
<IRS-NUMBER>860221312
<STATE-OF-INCORPORATION>AZ
<FISCAL-YEAR-END>0128
</COMPANY-DATA>
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<FORM-TYPE>424B3
<ACT>33
<FILE-NUMBER>333-128775-02
<FILM-NUMBER>06578261
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<BUSINESS-ADDRESS>
<STREET1>645 E MISSOURI AVENUE
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
<PHONE>6022659200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>645 E MISSOURI AVENUE
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
</MAIL-ADDRESS>
</FILER>
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>Fastlane Merger LLC
<CIK>0001349319
<IRS-NUMBER>204037122
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0129
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>424B3
<ACT>33
<FILE-NUMBER>333-128775-07
<FILM-NUMBER>06578258
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<BUSINESS-ADDRESS>
<STREET1>645 E. MISSOURI AVENUE, SUITE 400
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
<PHONE>(602) 265-9200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>645 E. MISSOURI AVENUE, SUITE 400
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
</MAIL-ADDRESS>
</FILER>
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>Murrays Inc.
<CIK>0001349320
<IRS-NUMBER>133855319
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0129
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>424B3
<ACT>33
<FILE-NUMBER>333-128775-06
<FILM-NUMBER>06578257
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<BUSINESS-ADDRESS>
<STREET1>645 E. MISSOURI AVENUE, SUITE 400
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
<PHONE>(602) 265-9200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>645 E. MISSOURI AVENUE, SUITE 400
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>p71242b4e424b3.htm
<DESCRIPTION>424B3
<TEXT>
<HTML>
<HEAD>
<TITLE>e424b3</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV align="right" style="font-size: 10pt;color: #000000; background: #ffffff;">
Filed pursuant to Rule&nbsp;424(b)(3)
</DIV>

<DIV align="right" style="font-size: 10pt;color: #000000; background: #ffffff;">
Registration No.&nbsp;333-128775
</DIV>

<DIV align="left" style="font-size: 10pt;color: #000000; background: #ffffff;">
<B>PROSPECTUS SUPPLEMENT NO.&nbsp;1</B>
</DIV>

<DIV align="left" style="font-size: 10pt;color: #000000; background: #ffffff;">
<B>(To Prospectus dated January&nbsp;13, 2006)</B>
</DIV>

<DIV align="center" style="font-size: 16pt;color: #000000; background: #ffffff; margin-top: 6pt; margin-left: 0; margin-right: 0; margin-bottom: 0; ">
<B>CSK Auto, Inc.</B>
</DIV>

<DIV align="center" style="font-size: 13pt;color: #000000; background: #ffffff;">
<B>$125,000,000
3<FONT style="font-size: 70%"><SUP>3</SUP></FONT>/<FONT style="font-size: 60%">8</FONT>%&nbsp;Senior
Exchangeable Notes due 2025</B>
</DIV>

<DIV align="center" style="font-size: 10pt;color: #000000; background: #ffffff;">
<B>Guaranteed by</B>
</DIV>

<DIV align="center" style="font-size: 10pt;color: #000000; background: #ffffff;">
<B>CSK Auto Corporation</B>
</DIV>

<DIV align="center" style="font-size: 10pt;color: #000000; background: #ffffff;">
<B>CSKAUTO.COM, Inc.</B>
</DIV>

<DIV align="center" style="font-size: 10pt;color: #000000; background: #ffffff;">
<B>Fastlane Merger LLC</B>
</DIV>

<DIV align="center" style="font-size: 10pt;color: #000000; background: #ffffff;">
<B>Murray&#146;s Inc.</B>
</DIV>

<DIV align="center" style="font-size: 10pt;color: #000000; background: #ffffff;">
<B>MDAS Inc.</B>
</DIV>

<DIV align="center" style="font-size: 10pt;color: #000000; background: #ffffff;">
<B>Murray&#146;s Discount Auto Stores, Inc.</B>
</DIV>

<DIV align="center" style="font-size: 10pt;color: #000000; background: #ffffff;">
<B>and</B>
</DIV>

<DIV align="center" style="font-size: 13pt;color: #000000; background: #ffffff;">
<B>Shares of CSK Auto Corporation Common Stock Issuable Upon
Exchange of the Notes</B>
</DIV>

<DIV align="center" style="font-size: 3pt;color: #000000; background: #ffffff; margin-top: 3pt; margin-left: 0; margin-right: 0; margin-bottom: 0; ">
<DIV style="width: 30%; border-top: 1.0pt solid black; font-size: 1pt">&nbsp;</DIV>
</DIV>

<DIV align="left" style="font-size: 10pt;color: #000000; background: #ffffff; margin-top: 3pt; margin-left: 0; margin-right: 0; margin-bottom: 0; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
This prospectus supplement No.&nbsp;1 supplements and amends the
prospectus dated January&nbsp;13, 2006 relating to the resale by
the selling securityholders of up to $125,000,000 aggregate
principal amount of the
3<FONT style="font-size: 70%"><SUP>3</SUP></FONT>/<FONT style="font-size: 60%">8</FONT>%
Senior Exchangeable Notes due 2025 issued by CSK Auto, Inc. and
shares of CSK Auto Corporation common stock issuable upon
exchange of the notes. This prospectus supplement should be read
in conjunction with the prospectus dated January&nbsp;13, 2006,
which is to be delivered with this prospectus supplement, and
this prospectus supplement is qualified by reference to the
prospectus, except to the extent that the information in this
prospectus supplement supersedes the information contained in
the prospectus. This prospectus supplement is not complete
without, and may not be delivered or utilized except in
connection with, the prospectus, including any amendments or
supplements thereto.
</DIV>

<DIV align="left" style="font-size: 10pt;color: #000000; background: #ffffff; margin-top: 6pt; margin-left: 0; margin-right: 0; margin-bottom: 0; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
The table appearing under the caption &#147;Selling
Securityholders&#148; beginning on page 62 of the prospectus
sets forth information with respect to the selling
securityholders and the respective amounts of notes beneficially
owned by each selling securityholder that may be offered
pursuant to the prospectus. The information that is set forth
below supersedes the information previously listed in the
prospectus with respect to the selling securityholders listed below to reflect corrected information as of the prospectus
date.
</DIV>

<CENTER>
<TABLE width="100%" align="center" cellspacing="0" cellpadding="0" border="0" style="font-size: 10pt; margin-top: 6pt; ">

<TR style="font-size: 1pt;">
    <TD width="28%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
</TR>

<TR style="font-size: 8pt;">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Other Shares of</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
</TR>

<TR style="font-size: 8pt;">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>CSK Corp.</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
</TR>

<TR style="font-size: 8pt;">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Common Stock</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
</TR>

<TR style="font-size: 8pt;">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Aggregate</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Beneficially</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
</TR>

<TR style="font-size: 8pt;">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Principal Amount</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Number of</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Owned Before the</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
</TR>

<TR style="font-size: 8pt;">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>of Notes</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Shares of CSK</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Offering and</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Percentage of</B></TD><TD></TD>
</TR>

<TR style="font-size: 8pt;">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Beneficially</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Percentage of</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Corp. Common</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Assumed to be</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>CSK Corp.</B></TD><TD></TD>
</TR>

<TR style="font-size: 8pt;">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Owned that May</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Notes</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Stock that May</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Owned Following</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Common Stock</B></TD><TD></TD>
</TR>

<TR style="font-size: 8pt;">
    <TD align="left" nowrap><B>Name*</B></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>be Sold ($)</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Outstanding**</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>be Sold***</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>the Offering</B></TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap><B>Outstanding****</B></TD><TD></TD>
</TR>

<TR valign="bottom" style="font-size: 1px">
    <TD align="center" nowrap style="border-top: 1pt solid #000000;">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap style="border-top: 1pt solid #000000;">&nbsp;</TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap style="border-top: 1pt solid #000000;">&nbsp;</TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap style="border-top: 1pt solid #000000;">&nbsp;</TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap style="border-top: 1pt solid #000000;">&nbsp;</TD><TD></TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="center" nowrap style="border-top: 1pt solid #000000;">&nbsp;</TD><TD></TD>
</TR>

<TR valign="bottom" bgcolor="#CCEEFF">
    <TD align="left" valign="top">
    <DIV style="margin-left: 10px; text-indent: -10px">
    CQS Convertible and Quantitative Strategies Master Fund
    Limited(11)</DIV>
    </TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="bottom">&nbsp;</TD>
    <TD align="right" valign="bottom" nowrap>1,000,000</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="bottom">&nbsp;</TD>
    <TD align="right" valign="bottom" nowrap>&#151;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="bottom">&nbsp;</TD>
    <TD align="right" valign="bottom" nowrap>43,313</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="bottom">&nbsp;</TD>
    <TD align="right" valign="bottom" nowrap>&#151;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="bottom">&nbsp;</TD>
    <TD align="right" valign="bottom" nowrap>&#151;</TD>
    <TD>&nbsp;</TD>
</TR>

<TR>
    <TD align="left" valign="top">
    <DIV style="margin-left: 10px; text-indent: -10px">
    Ellington Overseas Partners, Ltd.(12)</DIV>
    </TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="bottom">&nbsp;</TD>
    <TD align="right" valign="bottom" nowrap>1,450,000</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="bottom">&nbsp;</TD>
    <TD align="right" valign="bottom" nowrap>1.16%</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="bottom">&nbsp;</TD>
    <TD align="right" valign="bottom" nowrap>62,803</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="bottom">&nbsp;</TD>
    <TD align="right" valign="bottom" nowrap>&#151;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="bottom">&nbsp;</TD>
    <TD align="right" valign="bottom" nowrap>&#151;</TD>
    <TD>&nbsp;</TD>
</TR>

</TABLE>
</CENTER>

<DIV align="left" style="font-size: 10pt;color: #000000; background: #ffffff; margin-top: 6pt; margin-left: 0; margin-right: 0; margin-bottom: 0; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Information about the selling securityholders may change over
time. Any changed information given to us by the selling
securityholders will be set forth in additional prospectus
supplements if and when necessary.
</DIV>

<DIV align="center" style="font-size: 3pt;color: #000000; background: #ffffff; margin-top: 3pt; margin-left: 0; margin-right: 0; margin-bottom: 0; ">
<DIV style="width: 30%; border-top: 1.0pt solid black; font-size: 1pt">&nbsp;</DIV>
</DIV>

<DIV align="left" style="font-size: 12pt;color: #000000; background: #ffffff; margin-top: 3pt; margin-left: 0; margin-right: 0; margin-bottom: 0; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<B>Investing in these notes involves risks. See &#147;Risk
Factors&#148; beginning on page&nbsp;10 of the prospectus.</B>
</DIV>

<DIV align="center" style="font-size: 3pt;color: #000000; background: #ffffff; margin-top: 3pt; margin-left: 0; margin-right: 0; margin-bottom: 0; ">
<DIV style="width: 30%; border-top: 1.0pt solid black; font-size: 1pt">&nbsp;</DIV>
</DIV>

<DIV align="left" style="font-size: 10pt;color: #000000; background: #ffffff; margin-top: 3pt; margin-left: 0; margin-right: 0; margin-bottom: 0; ">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<B>Neither the Securities and Exchange Commission, any state
securities commission nor any other regulatory body has approved
or disapproved of these securities or determined if this
prospectus is truthful or complete. Any representation to the
contrary is a criminal offense.</B>
</DIV>

<DIV align="center" style="font-size: 10pt;color: #000000; background: #ffffff; margin-top: 6pt; margin-left: 0; margin-right: 0; margin-bottom: 0; ">
This prospectus supplement is dated February&nbsp;3, 2006
</DIV>
</BODY>
</HTML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
