No, when I play FlatOut, I am not thinking of getting a new car. If I did that I would hit a tree going 120MPH projecting my driver out of the windsheild. In fact, very few car video games give you a car for winning a race, Flatout, PGR2, MC3:DE, Need For Speed Hot Pursuit 2 and Burnout Revenge all don't give you a car. They only give you a couple of bucks to buy a part for a car. And, if you play hardcore like I do, you aren't paying attention to the cars you race against WHILE you are racing, it is to hard not to crash and admire their better cars.
Most video games (PGR2, Midnight Club and NFS) list their cars. But FlatOut doesn't. I can only identify my car (1974 Dodge Monaco sedan) and my previous car (1974 Chevrolet Camaro SS).