Actually, at what is known as "Buy Here - Pay Here" lots, the default rate, before devices like this, ran as high as one out of three. That's one of the reasons for the higher price of the car and the high interest rates. And even with the high prices and rates, most of the dealers could not afford to stay in the business. With this system in place, it makes it possible for 'credit criminals' (as they are called) to get a car at all.