Alternatively, you could get a personal loan or signature loan to purchase the car. These types of loans have no collateral, so what you use the money for is entirely up to you.
Unfortunately, these loans will have a much higher interest rate. But if you make extra payments and get a short-term loan, you can minimize the amount of interest you pay. If you choose this option, make sure you stay on top of your repayments—otherwise, it could hurt your credit score.