Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 25,391	$ 29,939
Revenue recognized	2,100	100
Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	24,856	29,554
Services provided over time
Disaggregation of Revenue [Line Items]
Revenue	535	385
Electric vehicles products
Disaggregation of Revenue [Line Items]
Revenue	14,623	3,030
Electric vehicles services
Disaggregation of Revenue [Line Items]
Revenue	83	32
Charging, batteries and powertrain products
Disaggregation of Revenue [Line Items]
Revenue	254	1,485
Charging, batteries and powertrain services
Disaggregation of Revenue [Line Items]
Revenue	452	140
Title and escrow services
Disaggregation of Revenue [Line Items]
Revenue	9,925	24,841
Digital advertising services and other
Disaggregation of Revenue [Line Items]
Revenue	0	197
Other revenue
Disaggregation of Revenue [Line Items]
Revenue	54	214
Grant
Disaggregation of Revenue [Line Items]
Revenue	50	200
Malaysia
Disaggregation of Revenue [Line Items]
Revenue	17	7
USA
Disaggregation of Revenue [Line Items]
Revenue	11,760	26,876
PRC
Disaggregation of Revenue [Line Items]
Revenue	13,235	3,056
Italy
Disaggregation of Revenue [Line Items]
Revenue	$ 379	$ 0