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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash flows from operating activities: |  |  |
Net loss | $ (237,986) | $ (362,298) | $ (94,718)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Depreciation and amortization | 4,162 | 2,517 | 2,316
Noncash lease expense relating to operating lease right-of-use assets | 3,705 | 0 | 0
Amortization of premium on marketable securities | 1,792 | 175 | 0
Change in fair value of warrants and SAFE liabilities | 26,126 | 268,266 | 24,471
Vendor stock-in-lieu of cash program | 10,817 | 0 | 0
Impairment of inventories | 2,918 | 4,407 | 1,378
Loss on sale or disposal of property and equipment | 752 | 525 | 37
Loss on extinguishment of debt | 0 | 3,996 | 6,124
Share-based compensation | 77,684 | 8,711 | 2,702
Expense related to Volvo Warrants | 959 | 0 | 0
Warranty related to sensors | 1,538 | 0 | 0
Deferred taxes | (1,262) | 0 | 0
Other | 305 | 0 | 0
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (6,233) | (4,294) | 805
Inventories | (10,751) | (4,018) | (2,454)
Prepaid expenses and other current assets | (24,340) | (2,805) | 179
Other non-current assets | (6) | 165 | (2)
Accounts payable | 3,838 | 2,620 | (431)
Accrued and other current liabilities | 3,578 | 6,693 | (448)
Other non-current liabilities | (6,017) | (302) | (160)
Net cash used in operating activities | (148,421) | (75,642) | (60,201)
Cash flows from investing activities: |  |  |
Cash received from acquisition of OptoGration, Inc. | 358 | 0 | 0
Purchases of marketable securities (including $16,423 with related parties in 2021, see Note 19) | (716,933) | (315,920) | (6,908)
Proceeds from maturities of marketable securities | 366,857 | 16,755 | 0
Proceeds from sales/redemptions of marketable securities (including $4,396 with related parties in 2021, see Note 19) | 161,910 | 28,974 | 249
Proceeds from refundable security deposits | 0 | 581 | 0
Purchases of property and equipment | (6,433) | (2,202) | (1,487)
Disposal of property and equipment | 53 | 18 | 368
Net cash used in investing activities | (194,188) | (271,794) | (7,778)
Cash flows from financing activities: |  |  |
Proceeds from issuance of convertible senior notes, net of debt discounts of $15,625 | 609,375 | 0 | 0
Purchases of capped call options | (73,438) | 0 | 0
Cash received from Gores on recapitalization | 0 | 380,601 | 0
Transaction costs related to merger with Gores | 0 | (17,226) | 0
Issuance cost paid for Series X convertible preferred stock | 0 | (5,790) | 0
Proceeds from the issuance of debt | 0 | 32,101 | 0
Repayment of debt | (112) | (41,190) | (9,540)
Debt prepayment charges | 0 | (1,918) | 0
Debt issuance costs | 0 | (361) | (5,367)
Settlement of SAFE notes | 0 | 0 | (5,609)
Principal payments on finance leases (capital leases prior to adoption of ASC 842) | (289) | (222) | (118)
Proceeds from issuance of SAFE notes | 0 | 0 | 37,377
Proceeds from exercise of warrants | 153,927 | 0 | 0
Proceeds from exercise of stock options | 5,859 | 0 | 0
Proceeds from issuance of restricted common stock | 0 | 0 | 61
Repurchases of common stock and redemption of warrants | (231,600) | (10) | (13)
Other financing activities | (130) | 0 | 0
Net cash provided by financing activities | 463,592 | 529,850 | 85,457
Net increase in cash, cash equivalents and restricted cash | 120,983 | 182,414 | 17,478
Ending cash, cash equivalents and restricted cash | 330,702 | 209,719 | 27,305
Beginning cash, cash equivalents and restricted cash | 209,719 | 27,305 | 9,827
Supplemental disclosures of cash flow information: |  |  |
Cash paid for interest | 215 | 2,789 | 2,018
Supplemental disclosures of noncash investing and financing activities: |  |  |
Conversion of Bridge Note into Series A convertible preferred stock | 0 | 0 | 7,719
Conversion of SAFE notes into common stock | 0 | 0 | 4,925
Conversion of SAFE notes into Series A convertible preferred stock | 0 | 0 | 173,726
Issuance of Class A common stock upon exercise of warrants | 338,293 | 30,112 | 0
Issuance of Class A common stock upon exercise of warrants | 0 | 422,813 | 0
Issuance of Class A common stock for investment in Robotic Research OpCo, LLC | 10,002 | 0 | 0
Issuance of Class A common stock to acquire OptoGration, Inc. | 6,527 | 0 | 0
Assets acquired under finance leases (capital leases prior to adoption of ASC 842) | 0 | 318 | 397
Purchases of property and equipment recorded in accounts payable and accrued liabilities | 849 | 319 | 150
Amounts payable for shares repurchased | $ 4,273 | 0 | 0
Accounting Standards Update [Extensible Enumeration] | Accounting Standards Update 2016-02 |  |
Other Noncash Investing and Financing Items [Abstract] |  |  |
Operating lease right-of-use assets obtained in exchange for lease obligations | $ 2,876 | 0 | 0
Accounting Standards Update 2016-02 |  |  |
Other Noncash Investing and Financing Items [Abstract] |  |  |
Operating lease right-of-use assets obtained in exchange for lease obligations | 10,849 | 0 | 0
Series X Convertible Preferred Stock |  |  |
Cash flows from financing activities: |  |  |
Issuance cost paid for Series X convertible preferred stock |  | (5,790) |
Other Noncash Investing and Financing Items [Abstract] |  |  |
Proceeds from issuance of preferred stock | 0 | 183,865 | 0
Series A Convertible Preferred Stock |  |  |
Other Noncash Investing and Financing Items [Abstract] |  |  |
Proceeds from issuance of preferred stock | $ 0 | $ 0 | $ 68,666

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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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