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Revenue
 12 Months Ended
Dec. 31, 2023
Revenue from Contract with Customer [Abstract]  
Revenue Revenue
The following table summarizes the Company's revenues disaggregated by revenue source, geography (based on the Company's business locations), and timing of revenue recognition (in thousands):
Year Ended
December 31,
2023		December 31,
2022
Geographic Markets
North America$9,574 $7,497 
Europe5,885 11,518 
Total$15,459 $19,015 
Product or Service
Electric vehicle products$3,328 $4,830 
Electric vehicle services72— 
Electric motorcycle products and services7,590 10,435 
Electric motorcycle sponsorship services743 1,075 
Charging, battery and powertrain products2,932 849 
Charging, battery and powertrain services30 1,482 
Other764 344 
Total$15,459 $19,015 

The following table provides information about client receivables, contract liabilities and contract assets from contracts with customers:
Year ended
Balances from contracts with customers:December 31, 2023December 31, 2022December 31, 2021
Accounts receivable, net$1,037 $2,107 $895 
Deferred revenue2,537 2,186 1,241 
Contract assets 34 3,579 2,172 

In the years ended December 31, 2023 and 2022, the Company recorded grant revenue of $1.0 million and $0.3 million, respectively, in "Other revenue" in the consolidated statements of operations.

For the years ended December 31, 2023 and 2022, the Company recorded a contract assets of $0.0 million and $3.6 million, respectively.
The following table reflects the Company’s deferred revenue balance as of December 31, 2023 and 2022 (in thousands):

Year ended
Deferred revenue from contracts with customers:December 31, 2023December 31, 2022
Beginning balance$2,186 $1,241 
Revenue recognized, included in beginning balance(1,600)(996)
Additions, net of revenue recognized during period, and other1,951 1,941 
Ending Balance$2,537 $2,186 

In the years ended December 31, 2023 and 2022 the Company recognized revenue of $1.6 million and $1.0 million respectively, recorded in deferred revenue as of the beginning of the period.