Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement - Summary of Assets and Liabilities Measured at Fair Value Recurring and Nonrecurring Basis (Details)

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Fair Value Measurement - Summary of Assets and Liabilities Measured at Fair Value Recurring and Nonrecurring Basis (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Alternative fuel credits $ 199,069 $ 476,992
Marketable securities 508,871 3,150,332
Total assets 707,940 3,627,324
Warrants payable 21,141 5,102
Total liabilities 21,141 5,102
Level 1 [Member]    
Alternative fuel credits
Marketable securities 508,871 3,150,332
Total assets 508,871 3,150,332
Warrants payable
Total liabilities
Level 2 [Member]    
Alternative fuel credits 199,069 476,992
Marketable securities
Total assets 199,069 476,992
Warrants payable
Total liabilities
Level 3 [Member]    
Alternative fuel credits
Marketable securities
Total assets
Warrants payable 21,141 5,102
Total liabilities $ 21,141 $ 5,102