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Debt (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Debt (Details)    
Notes payable $ 2,400,000 $ 1,800,000
Convertible notes payable 702,000 581,950
Test vehicle financing 44,135 56,231
Note payable - related party 21,641 12,897
Note payable - UPT minority owner 130,000 190,000
Total 3,297,776 2,641,078
Debt discount (632,934) (513,245)
Total 2,664,842 2,127,833
Less: current portion (2,631,268) (2,091,014)
Long-term portion $ 33,574 $ 36,819