I have to agree with XCNuse here, I don't think including real production cars in LFS would work. You would just have people complaining that "The M3 in LFS doesn't handle like my M3". It just means more work for the Devs, trying to make a car in the sim handle like its real-life counterpart. Whereas the way the game is at the minute, they are creating cars from scratch, and are not trying to make e.g. an XRT handle like a Starion turbo (just an example), and therefore it just handles like an XRT! I know that probably made no sense but its how I see it!