I just did the endurance race for superspeed way and I won the Tickford car. There were 4 cars that I could have won (0ne was an F! car) but I got the tickford. If I race again will I win a second car, or is it only one car per event?
its random, yes u will a car a second, third, 4th adn 5th time..you'll a car evertytime u do it. But its a random car of the 4. You can win a Corvette C5R, Clio Race Car, Tickford, and the f090s.....u can win the same car over agian so its not really the best idea to do.
You can also get the Polyphony 001 (which I think is the F094/S - it's certainly a 1994 Benetton), from the Super Speedway Endurance.
I would recommend doing that race over until you get the C5R and the 001/094S, as they are the two cars that more than anything helped me to progres through the game.