Revenue from Contracts with Customers (Details Narrative)
1 Months Ended 3 Months Ended 6 Months Ended
May 30, 2019
May 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Mar. 31, 2019
USD ($)
Disaggregation of Revenue [Line Items]              
Revenue recognized     $ 11,858,295 $ 3,820,433 $ 23,793,845 $ 5,384,680  
Reimbursement of Costs and Expenses [Member]              
Disaggregation of Revenue [Line Items]              
Revenue recognized     2,309,503 0 4,309,503 0  
Engineering Services Contract [Member]              
Disaggregation of Revenue [Line Items]              
Revenue recognized     2,403,666 3,848,927 2,977,666 3,130,611  
Consulting Fees [Member]              
Disaggregation of Revenue [Line Items]              
Revenue recognized     0 162,048 0 261,048  
Sale of S7 [Member]              
Disaggregation of Revenue [Line Items]              
Percentage of net profit from sale of vehicle 0.33            
Revenue of Engineering and Manufacturing Services [Member]              
Disaggregation of Revenue [Line Items]              
Revenue recognized     410,535        
Cup Agreement [Member]              
Disaggregation of Revenue [Line Items]              
Revenue recognized     7,456,024 0 17,295,719 0  
Engineering Services Agreement [Member]              
Disaggregation of Revenue [Line Items]              
Deferred revenue     1,323,696   1,323,696   $ 1,068,150
Saleen S1 [Member]              
Disaggregation of Revenue [Line Items]              
Contract amount     31,605,000   31,605,000    
Saleen S1 [Member] | Amended Cup Agreement [Member]              
Disaggregation of Revenue [Line Items]              
Expected to generate aggregate revenue   $ 15,631,000          
Signature Cars [Member]              
Disaggregation of Revenue [Line Items]              
Revenue recognized     1,388,018 $ 645,986 1,872,123 $ 1,164,673  
S7 Car [Member]              
Disaggregation of Revenue [Line Items]              
Revenue recognized     $ 556,300   $ 764,433