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4. Debt (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Debt Details Abstract    
Notes payable $ 1,800,000
Convertible notes payable 581,950 795,803
Test vehicle financing 56,231 42,444
Note payable - related party 12,897 7,490
Note payable - UPT minority owner 190,000 250,000
Total 2,641,078 1,095,737
Debt discount (513,245) (339,416)
Total 2,127,833 756,321
Less: current portion 2,091,014 659,312
Long-term portion $ 36,819 $ 97,009