For me, Forza 3 was about the customization and 400+ cars, but the races do get pretty bland, especially on hard (yeah, I said it), since I can run a perfect or near perfect race and still finish 2nd or 3rd but still get a boat load of points after the race. It's just so unfulfilling until some of the most badass cars on the planet get unlocked, then the ol' jaw drops.