Nature of Business and Organization and Basis of Presentation - Narrative (Details)								3 Months Ended		9 Months Ended
	Aug. 16, 2024	Aug. 04, 2024 shares	Feb. 29, 2024	Feb. 23, 2024 shares	Feb. 05, 2024 shares	Aug. 22, 2023 $ / shares shares	Aug. 16, 2023	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2023 USD ($)	Aug. 31, 2024 shares	Jul. 31, 2024 shares	Feb. 04, 2024 shares	Dec. 31, 2023 USD ($) $ / shares shares	Aug. 25, 2023 shares	Feb. 28, 2023 shares	Feb. 27, 2023 shares
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Other										$ (366,000)	$ (1,416,000)
Revenue								$ 9,000	$ 551,000	304,000	551,000
Co-creation fees								$ 200,000		$ 500,000
Lessor, sales-type lease, term of contract								36 months		36 months
Lessor, operating 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								1,593,000	(470,000)	2,252,000	8,906,000
Accrued interest or penalties								$ 0	$ 0	$ 0	0
Common stock, shares authorized (in shares) | shares		104,245,313		11,582,813	34,748,438	3,860,938						104,245,313	104,245,313	3,860,938		1,286,980	433,855
Common stock, shares authorized before effect of reverse stock split (in shares) | shares				34,748,438		308,875,000
Common Stock
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Stockholder's equity, stock split, conversion ratio		0.025	0.333	0.333	0.333	0.0125	0.125
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								4,429,688		4,429,688					54,688	54,688
Class A Common Stock
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Stockholder's equity, stock split, conversion ratio	0.025		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								99,815,625		99,815,625					1,232,292	1,232,292	176,042	84,896
Retroactive application of recapitalization
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Total stock-based compensation expense											1,800,000
Revision of Prior Period, Reclassification, Adjustment
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Gain (loss) on write-off of vendor deposits											(400,000)
Other											$ (1,000,000.0)
Automobile Lease - Sales-Type Leasing Program
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue								$ 0		$ 0
Automobile Sales
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue								$ 0		$ 300,000