Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Total revenue	$ 665	$ 8,221	$ 11,643	$ 18,943
Revenue recognized	100	200	200	900
Total cost of revenue	2,118	8,878	13,931	18,861
EV products
Disaggregation of Revenue [Line Items]
Total revenue	(1,312)	3,170	2,753	8,066
EV products | Change of Accounting Estimate
Disaggregation of Revenue [Line Items]
Total revenue	2,800
Total cost of revenue	1,900
EV services
Disaggregation of Revenue [Line Items]
Total revenue	17	0	29	0
Electric motorcycle products and services
Disaggregation of Revenue [Line Items]
Total revenue	1,415	4,249	6,300	8,779
Electric motorcycle sponsorship services
Disaggregation of Revenue [Line Items]
Total revenue	0	0	36	0
Charging, batteries and powertrain products
Disaggregation of Revenue [Line Items]
Total revenue	482	206	1,989	583
Charging, batteries and powertrain services
Disaggregation of Revenue [Line Items]
Total revenue	0	426	30	1,205
Other revenue
Disaggregation of Revenue [Line Items]
Total revenue	63	170	506	310
Total cost of revenue	816	56	1,639	198
North America
Disaggregation of Revenue [Line Items]
Total revenue	(367)	3,971	6,695	10,164
Europe
Disaggregation of Revenue [Line Items]
Total revenue	$ 1,032	$ 4,250	$ 4,948	$ 8,779