I tried it before, a few years ago. Neighbour lent it to me, and i think he still has it
To be honest, it's not a very game. None of the cars are licensed (though they greatly resemble real life ones), and their handling physics are way off. Graphics weren't great either
It was pretty interesting though, i'll give it that. Modding your ride is very very realistic in the way you buy parts (i.e. boring if you're not a complete car nut). For example if you wanted to change your vehicle's rims, you had to find the exact same tire size as well, down to the rim size and even tire width! For other parts you had to find the ones for your exact model, because there were a few versions of each car, with different engines. Even something as simple as paint had quite a twist. Sure, you could paint the whole car, as per almost every other game, but you also had the option of painting every single body panel a different colour!
Can't really remember much else from the little that I played those years ago. I don't think you'll have much fun with it, since modding cars (which i suppose is the highlight of the game) requires you to actually go racing to get the money, but it is pretty fascinating. Now that you mention it, I think i might even give it another go, now that i have a much greater working knowledge of cars...