Ay, there's the rub.
I have bought and sold a considerable amount of cars in the past 40 years. I have often jumped titles and skirted dealer licensing laws. For the volume of vehicles sold by the OP for 25% of the profit I don't believe for a minute that he didn't know and wasn't complicit in something illegal. For the moment I'm sticking to illegal purpose making the contract unenforceable but I'm willing to wait and see how the OP fares in small claims court.

