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<CONFORMED-NAME>RUSH ENTERPRISES INC \TX\
<CIK>0001012019
<ASSIGNED-SIC>5500
<IRS-NUMBER>741733016
<STATE-OF-INCORPORATION>TX
<FISCAL-YEAR-END>1231
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<STREET1>555 IH 35 SOUTH
<CITY>NEW BRAUNFELS
<STATE>TX
<ZIP>78130
<PHONE>8306265200
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<CONFORMED-NAME>Weaver Derrek
<CIK>0001318061
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<ACT>34
<FILE-NUMBER>000-20797
<FILM-NUMBER>05634147
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<BUSINESS-ADDRESS>
<PHONE>830-626-5200
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<STREET1>C/O RUSH ENTERPRISES, INC.
<STREET2>P. O. BOX 34630
<CITY>SAN ANTONIO
<STATE>TX
<ZIP>78265
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        <issuerName>RUSH ENTERPRISES INC \TX\</issuerName>
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            <rptOwnerName>Weaver Derrek</rptOwnerName>
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            <officerTitle>VP, Chief Compliance Officer</officerTitle>
            <otherText>General Counsel</otherText>
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    <ownerSignature>
        <signatureName>Derrek Weaver</signatureName>
        <signatureDate>2005-02-22</signatureDate>
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<head>





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<div style="font-family:Times New Roman;">

<p align="right" style="font-weight:bold;margin:0in 0in 12.0pt;page-break-after:avoid;text-align:right;text-transform:uppercase;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;text-transform:none;">Exhibit 24</font></b></p>

<p style="font-weight:bold;margin:0in 0in 12.0pt;page-break-after:avoid;text-align:center;text-transform:uppercase;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;text-transform:none;">POWER
OF ATTORNEY</font></b></p>

<p style="margin:0in 0in 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Know all by these presents, that the undersigned
hereby constitutes and appoints each of Martin A. Naegelin, Jr. and Steven L.
Keller, signing singly, the undersigned&#146;s true and lawful attorney-in-fact to:</font></p>

<p align="left" style="margin:5.0pt .5in 12.0pt 1.0in;text-align:left;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">execute for and on behalf of the
undersigned, in the undersigned&#146;s capacity as an officer and/or director of
Rush Enterprises, Inc. (the &#147;Company&#148;), Forms 3, 4 and 5 in accordance with
Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;</font></p>

<p align="left" style="margin:5.0pt .5in 12.0pt 1.0in;text-align:left;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">do and perform any and all acts for and
on behalf of the undersigned which may be necessary or desirable to complete
and execute any such Form 3, 4 or 5, complete and execute any amendment or
amendments thereto, and timely file such form with the United States Securities
and Exchange Commission and any stock exchange or similar authority; and</font></p>

<p align="left" style="margin:5.0pt .5in 12.0pt 1.0in;text-align:left;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">take any other action of any type
whatsoever in connection with the foregoing which, in the opinion of such
attorney-in-fact, may be of benefit to, in the best interest of, or legally
required by, the undersigned, it being understood that the documents executed
by such attorney-in-fact on behalf of the undersigned pursuant to this Power of
Attorney shall be in such form and shall contain such terms and conditions as such
attorney-in-fact may approve in such attorney-in-fact&#146;s discretion.</font></p>

<p style="margin:0in 0in 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; The undersigned hereby grants to each such
attorney-in-fact full power and authority to do and perform any and every act
and thing whatsoever requisite, necessary, or proper to be done in the exercise
of any of the rights and powers herein granted, as fully to all intents and
purposes as the undersigned might or could do if personally present, with full
power of substitution or revocation, hereby ratifying and confirming all that
such attorney-in-fact, or such attorney-in-fact&#146;s substitute or substitutes,
shall lawfully do or cause to be done by virtue of this Power of Attorney and
the rights and powers herein granted. The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned&#146;s responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934.</font></p>

<p style="margin:0in 0in 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; This Power of Attorney shall remain in full force and
effect until the undersigned is no longer required to file Forms 3, 4 and 5
with respect to the undersigned&#146;s holdings of and transactions in securities
issued by the Company, unless earlier revoked by the undersigned in a signed
writing delivered to the foregoing attorneys-in-fact.</font></p>

<p style="margin:0in 0in 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; IN WITNESS WHEREOF, the undersigned has caused this
Power of Attorney to be executed as of this 21<sup>st</sup> day of February
2005.</font></p>

<p style="margin:0in 0in 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="81%" style="border-collapse:collapse;width:81.82%;">
 <tr>
  <td width="64%" valign="top" style="padding:0in .7pt 0in .7pt;width:64.98%;">
  <p style="margin:0in 0in .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="35%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:35.02%;">
  <p style="margin:0in 0in .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Derrek Weaver</font></p>
  </td>
 </tr>
 <tr>
  <td width="64%" valign="top" style="padding:0in .7pt 0in .7pt;width:64.98%;">
  <p style="margin:0in 0in .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="35%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:35.02%;">
  <p style="margin:0in 0in .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">DERREK WEAVER</font></p>
  </td>
 </tr>
</table>

<p style="line-height:200%;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;line-height:200%;">&nbsp;</font></p>

<p align="center" style="line-height:200%;margin:0in 0in .0001pt;text-align:center;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;line-height:200%;">&nbsp;</font></p>

<div style="line-height:200%;margin:0in 0in .0001pt;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;line-height:200%;">

<hr size="2" width="100%" noshade color="gray" align="left">

</font></div>

<p align="center" style="line-height:200%;margin:0in 0in .0001pt;text-align:center;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;line-height:200%;">&nbsp;</font></p>

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