Many dealers will not accept cash after a certain dollar amount. No dealer wants 50.000 in cash on site not to mention this money has to be taken to the bank by an employee. The last 2 dealers i worked for would not sell a car in cash it's there policy not the states. Dealers are a private co. and as such make there own rules and policy's. Dealers don't care who finances your loan they just want to sell you a car and yes if you allow it they will scam you, always have always will.