Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 34,202	$ 30,128	$ 59,593	$ 60,066
Revenue recognized	3,900	1,400	3,700	600
Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	33,783	29,059	58,639	58,611
Services provided over time
Disaggregation of Revenue [Line Items]
Revenue	419	1,069	954	1,455
Electric vehicles products
Disaggregation of Revenue [Line Items]
Revenue	23,577	5,274	38,200	8,304
Electric vehicles services
Disaggregation of Revenue [Line Items]
Revenue	74	75	157	108
Charging, batteries and powertrain products
Disaggregation of Revenue [Line Items]
Revenue	956	1,683	1,210	3,168
Charging, batteries and powertrain services
Disaggregation of Revenue [Line Items]
Revenue	338	617	790	756
Title and escrow services
Disaggregation of Revenue [Line Items]
Revenue	9,171	22,069	19,096	46,909
Digital advertising services and other
Disaggregation of Revenue [Line Items]
Revenue	0	34	0	231
Fund raising services
Disaggregation of Revenue [Line Items]
Revenue	7	0	7	0
Other revenue
Disaggregation of Revenue [Line Items]
Revenue	79	376	133	590
Grant
Disaggregation of Revenue [Line Items]
Revenue	100	400	100	600
Malaysia
Disaggregation of Revenue [Line Items]
Revenue	33	40	50	47
USA
Disaggregation of Revenue [Line Items]
Revenue	14,372	25,014	26,132	51,889
PRC
Disaggregation of Revenue [Line Items]
Revenue	15,647	5,074	28,882	8,130
Italy
Disaggregation of Revenue [Line Items]
Revenue	$ 4,150	$ 0	$ 4,529	$ 0