If you want to find out the details of a blank check auto loan, it helps to understand how they work. If you want to be able to focus on the price of the vehicle you are interested in, it helps to approach the car-buying process like a cash buyer. Many people that needed financing on a different vehicle and those that had a trade-in on their last car-purchasing transaction will tell you they would have gotten a better deal, if it would have been a cash transaction.