CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net loss	$ (237,275)	$ (62,377)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	4,255	1,104
Stock-based compensation	91,736	3,772
Revaluation of Series A redeemable convertible preferred stock warrant liability	0	3,339
Deferred income taxes	4	150
Non-cash in-kind services	28,642	0
Loss on forward contract liability	1,324	0
Changes in operating assets and liabilities:
Accounts receivable, net	521	(495)
Prepaid expenses and other current assets	(334)	38
Accounts payable, accrued expenses and other current liabilities	19,402	(10,627)
Customer deposits	6,823	0
Other long-term liabilities	0	148
Net cash used in operating activities	(84,902)	(64,948)
Cash flows from investing activities
Purchases of property and equipment	(5,855)	(6,328)
Deposits for property and equipment	(9,325)	(8,135)
Investment in joint venture	(15)	0
Cash paid towards build-to-suit lease	0	(18,186)
Net cash used in investing activities	(15,195)	(32,649)
Cash flows from financing activities
Proceeds from issuance of Series D redeemable convertible preferred stock, net of issuance costs paid	50,349	65,000
Business Combination and PIPE financing, net of issuance costs paid	616,726	0
Proceeds from the exercise of stock options	2,204	0
Proceeds from the exercise of stock warrants, net of issuance costs paid	263,064	0
Proceeds from landlord of finance lease	889	0
Payments to landlord for finance lease	(485)	0
Proceeds from note payable	4,134	0
Payment of note payable	(4,134)	0
Net cash provided by financing activities	932,747	65,000
Net increase (decrease) in cash and cash equivalents, including restricted cash	832,650	(32,597)
Cash and cash equivalents, including restricted cash, beginning of period	89,832	173,956
Cash and cash equivalents, including restricted cash, end of period	922,482	141,359
Supplementary cash flow disclosures:
Cash paid for interest	617	83
Cash interest received	887	1,156
Supplementary disclosures for noncash investing and financing activities:
Accrued purchases and deposits of property and equipment	2,136	5,251
Accrued Series D redeemable convertible preferred stock issuance costs	0	4,375
Non-cash prepaid in-kind services	63,358	0
Accrued Business Combination and PIPE transaction costs	285	0
Net liabilities assumed from VectoIQ in Business Combination	221	0
Non-cash acquisition of license	0	50,000
Property acquired through build-to-suit lease	0	3,243
Settlement of forward contract liability	$ 1,324	$ 0