Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Total revenue	$ 8,183	$ 9,385	$ 13,837	$ 11,615
Revenue recognized	100	800	100	800
EV products
Disaggregation of Revenue [Line Items]
Total revenue	2,534	3,857	4,638	4,947
EV services
Disaggregation of Revenue [Line Items]
Total revenue	348	5	361	6
Electric motorcycle products and services
Disaggregation of Revenue [Line Items]
Total revenue	2,112	4,150	4,885	4,529
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	3,183	956	3,443	1,210
Charging, batteries and powertrain services
Disaggregation of Revenue [Line Items]
Total revenue	0	338	30	790
Other revenue
Disaggregation of Revenue [Line Items]
Total revenue	6	79	444	133
North America
Disaggregation of Revenue [Line Items]
Total revenue	6,490	5,202	9,889	7,036
Asia
Disaggregation of Revenue [Line Items]
Total revenue	10	33	32	50
Europe
Disaggregation of Revenue [Line Items]
Total revenue	$ 1,683	$ 4,150	$ 3,916	$ 4,529