Yeah like some others said, I wold jus go to the bank get the loan..go back and be like "Give me my Dayum car!!" If that salesman gets mad and doesn't want to sale you it, jus get a lil louder and be like "So ok who wants to make some money today, bc this guy(the one that you talked too) should be fired."
If you got the money there in hand ready to buy a car I am rather positive another salesman will jump up and take it. Only thing a car salesman wants to rape more then a buyer is his competitive coworker..