I think I understand your business model, and it seems like a sound one, so what I'm going to suggest may sound like folly. Nevertheless, here goes..
Ford took his patented ideas and developed a car that was basic, affordable, and reasonably attractive. Within 10 years, he controlled the automobile market. A $17,000 (fob) four-seater coup with reasonable luggage space is doable, using a minimalist mass production line and non-union labor, in Upstate South Carolina. You could realize even more profit than a projected $6,000 per auto, by getting your battery provider to allow (through royalty arrangements) one of the area's local battery fabrication companies to make your Li-ion batteries. I know for a fact, that I could get you some really tasty tax incentives from our state development board.
We NEED a $19,000 - $20,000 car. Think about it. SOuth Carolina is waiting. You have my email.