Nature of Business and Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue	$ 539	$ 784
Automotive sales
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue	495	771
Automotive leasing
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Revenue	$ 44	$ 13