Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 27,047	$ 10,620	$ 87,832	$ 15,690
Revenue recognized	600		600
Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	25,526	10,620	84,546	15,690
Services provided over time
Disaggregation of Revenue [Line Items]
Revenue	1,521	0	3,286	0
Electric vehicles
Disaggregation of Revenue [Line Items]
Revenue	9,236	8,872	18,322	9,622
Charging, batteries and powertrains
Disaggregation of Revenue [Line Items]
Revenue	2,292	0	6,850	0
Title and escrow services
Disaggregation of Revenue [Line Items]
Revenue	15,519	0	62,429	0
Combustion engine vehicles
Disaggregation of Revenue [Line Items]
Revenue	0	1,268	0	5,160
Digital advertising services and other
Disaggregation of Revenue [Line Items]
Revenue	0	480	231	908
Malaysia
Disaggregation of Revenue [Line Items]
Revenue	18	33	65	42
USA
Disaggregation of Revenue [Line Items]
Revenue	17,984	480	69,873	908
PRC
Disaggregation of Revenue [Line Items]
Revenue	$ 9,045	$ 10,107	$ 17,894	$ 14,740