trying to sell my car

You can sell the car yourself and probably get $10K for it, then you'll have $1K to put down on another vehicle. Why are you selling? Do you not like it? If you don't mind driving it, just keep it and pay it down. Why go into another car loan if you don't have to? Are you worried about depreciation? All cars lose value, some quicker than others. Your just setting yourself up for another loan in another cars.

First investigate the price. The sales price would have the registration and sales tax added to it which would run up the final price a grand or two. The 9 grand pay off may be including the interest you will be paying. See what the actual loan balance is before you lose even more money dumping the car.