Nature of Business and Organization and Basis of Presentation - Narrative (Details)										3 Months Ended		6 Months Ended
	Aug. 19, 2024	Aug. 16, 2024	Mar. 01, 2024	Feb. 29, 2024	Feb. 23, 2024 shares	Feb. 05, 2024 shares	Aug. 25, 2023 shares	Aug. 22, 2023 $ / shares shares	Aug. 16, 2023	Jun. 30, 2024 USD ($) $ / shares shares	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) $ / shares shares	Jun. 30, 2023 USD ($)	Feb. 04, 2024 shares	Dec. 31, 2023 USD ($) $ / shares shares	Feb. 28, 2023 shares	Feb. 27, 2023 shares
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue										$ 293,000	$ 0	$ 295,000	$ 0
Co-creation fees										$ 200,000		$ 400,000
Lessor, operating lease, term of contract										36 months		36 months
Lessor, sales-type lease, term of contract										36 months		36 months
Refundable customer deposits										$ 3,200,000		$ 3,200,000			$ 3,200,000
Deferred revenue										0		0			$ 0
Total stock-based compensation expense										117,000	639,000	658,000	9,272,000
Accrued interest or penalties										$ 0	0	$ 0	0
Common stock, shares authorized (in shares) | shares					463,312,500	1,389,937,500	51,479,167	154,437,500						154,437,500		17,354,167
Common stock, shares authorized before effect of reverse stock split (in shares) | shares					1,389,937,500		12,355,000,000
Common Stock
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Stockholder's equity, stock split, conversion ratio				0.333	0.333	0.333		0.0125	0.125
Common Stock | Subsequent Event
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Stockholder's equity, stock split, conversion ratio	0.025	0.025
Class B Common Stock
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Common stock, par value (in dollars per share) | $ / shares								$ 0.0001		$ 0.0001		$ 0.0001			$ 0.0001
Common stock, shares authorized (in shares) | shares							2,187,500			19,687,500		19,687,500			2,187,500
Class A Common Stock
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Stockholder's equity, stock split, conversion ratio			0.333
Common stock, par value (in dollars per share) | $ / shares								$ 0.0001		$ 0.0001		$ 0.0001			$ 0.0001
Common stock, shares authorized (in shares) | shares							49,291,667			443,625,000		443,625,000			49,291,667	7,041,667	3,395,834
Retroactive application of recapitalization
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Total stock-based compensation expense													1,800,000
Automobile Lease - Sales-Type Leasing Program
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue										$ 0	$ 0	$ 0	$ 0
Automobile Sales
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue										$ 300,000		$ 300,000