All you have to do to get one of the coolest cars on earth(in my opinion, the Saleen S7) Is buy the corvette stingray, enter an endurence race, drive in b mode (i dont remember the exact name, its the one where you tell the driver what to do and he does it) check back everynow and then to make sure he pits. Do the race a few times and you will quickly get the money you need. it's not a really bad thing but it makes the game kinda boring because your doin race against nsx's and winin by 10 mins. Its still cool to have the car though, you get really rich, i have a ford gt and a saleen (obvously). I got so rich i sold the car and did the races again cus i didnt like the color of my car.