Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 24,278	$ 26,581	$ 83,871	$ 86,647
Revenue recognized	2,400	700	4,400	600
Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	23,742	25,196	82,381	83,807
Services provided over time
Disaggregation of Revenue [Line Items]
Total revenue	536	1,385	1,490	2,840
Electric vehicles products
Disaggregation of Revenue [Line Items]
Total revenue	14,713	8,737	52,913	17,041
Electric vehicles services
Disaggregation of Revenue [Line Items]
Total revenue	71	46	228	154
Charging, batteries and powertrain products
Disaggregation of Revenue [Line Items]
Total revenue	1,034	940	2,244	4,108
Charging, batteries and powertrain services
Disaggregation of Revenue [Line Items]
Total revenue	415	770	1,205	1,526
Title and escrow services
Disaggregation of Revenue [Line Items]
Total revenue	7,875	15,519	26,971	62,428
Digital advertising services and other
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	231
Fund raising services
Disaggregation of Revenue [Line Items]
Total revenue	50	0	57	0
Other revenue
Disaggregation of Revenue [Line Items]
Total revenue	120	569	253	1,159
Grant
Disaggregation of Revenue [Line Items]
Total revenue	100	600	300	1,200
Malaysia
Disaggregation of Revenue [Line Items]
Total revenue	3	17	53	64
USA
Disaggregation of Revenue [Line Items]
Total revenue	12,665	17,984	38,797	69,873
PRC
Disaggregation of Revenue [Line Items]
Total revenue	7,360	8,580	36,242	16,710	$ 29,700
Italy
Disaggregation of Revenue [Line Items]
Total revenue	$ 4,250	$ 0	$ 8,779	$ 0