+Arcaydus I mean, I think realistic vehicle physics would be great in a lot of games with vehicles. It'd be cool to see a messed up Ghost from Halo, or maybe a tank from Battlefield lose its treads by getting shot at by another tank. Realism adds on to the immersion of a game.
I'm guessing that's because most game developers think that anyone wouldn't want to play a game that's too realistic. But then again most developers are wrong.