Hey,
Had an idea, Is there a program that would give all the players and AI's random cars(that would be kinda in the same leaguage)?

I don't think this is really possible, as it would only be able to tell you what cars to put, and you'd have to select the cars manually. Also, you'd likely have to program in each car's physics or create your own car groups in the progam. That would be doable, but I just don't see much of an appeal for this tool. Just randomly choose the cars yourself. Or roll dice. Or something.

No, this is very possible. One way of doing it would to do it GTGR2-style; have a basic database of individual cars, assign each an ID, and randomly generate 1-6 IDs, before copying the relevant cars across into the folder.

You could do that with a pen and some pieces of paper luke

Of course you could, it wouldn't be a hard program to write if anyone was interested.

Or just write name of all cars and add numbers to every car and then use this: http://www.random.org/