Stockholders' Equity (Details) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Apr. 30, 2022 shares	Jan. 31, 2022 shares	Sep. 30, 2022 USD ($) vote $ / shares shares	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) vote $ / shares shares	Sep. 30, 2021 USD ($)	Dec. 31, 2021 shares
Class of Stock [Line Items]
Vendor payments in shares in lieu of cash (in shares)			537,720		8,824,385
Vendor payments in stock in lieu of cash, liability | $			$ 33,100		$ 33,100
Compensation expense | $			52,551	$ 33,520	117,874	$ 49,887
Research and development
Class of Stock [Line Items]
Compensation expense | $			11,326	$ 6,318	27,142	$ 12,743
Daimler North America Corporation
Class of Stock [Line Items]
Prepaid expenses and other current assets related to stock-in-lieu of cash program | $			5,200		5,200
Daimler North America Corporation | Research and development
Class of Stock [Line Items]
Compensation expense | $			$ 2,000		$ 5,900
Public Warrants
Class of Stock [Line Items]
Warrants outstanding (in shares)							0
Private Warrants
Class of Stock [Line Items]
Warrants outstanding (in shares)			1,668,269		1,668,269		3,077,021
Warrants exercised (in shares)	19,223	1,389,529
Shares issued for exercise of warrants (in shares)	4,387	401,365
Share per warrant (in shares)			1		1
Stock price of warrants (in dollars per share) | $ / shares			$ 11.50		$ 11.50
Class A Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)			715,000,000		715,000,000
Common stock, par value (in dollars per share) | $ / shares			$ 0.0001		$ 0.0001
Common stock, shares issued (in shares)			287,111,529		287,111,529
Common stock, shares outstanding (in shares)			265,248,079		265,248,079
Common stock, votes per share | vote			1		1
Class A Common Stock | Daimler North America Corporation
Class of Stock [Line Items]
Vendor payments in shares in lieu of cash (in shares)					1,500,000
Award vesting period (in years and in months)					2 years
Shares issued in period (in shares)					750,000
Class B Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)			121,000,000		121,000,000
Common stock, par value (in dollars per share) | $ / shares			$ 0.0001		$ 0.0001
Common stock, shares issued (in shares)			97,088,670		97,088,670
Common stock, shares outstanding (in shares)			97,088,670		97,088,670
Common stock, votes per share | vote			10		10