Revenue Recognition - Disaggregated revenues by major source (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Ancillary revenue	$ 1,715	$ 161
Revenues	36,376	5,048
Product and service revenue
Disaggregation of Revenue [Line Items]
Revenues	34,661	4,887
Stepvans And Vehicle Incentives
Disaggregation of Revenue [Line Items]
Revenues	31,829	2,735
Powertrains
Disaggregation of Revenue [Line Items]
Revenues	2,226	2,152
Fleet-as-a-Service
Disaggregation of Revenue [Line Items]
Revenues	$ 606	$ 0