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Revenue Recognition (Tables)
12 Months Ended
Dec. 31, 2021
Revenue from Contract with Customer [Abstract]  
Schedule of disaggregated revenues
   December 31, 2021   December 31, 2020 
Product revenue        
Powertrains  $2,152   $993 
Stepvans & vehicle incentives   2,735    1,516 
Total product revenue   4,887    2,509 
           
Ancillary revenue   161    132 
Total revenue  $5,048   $2,641