how about having window damage when you hit into other players or a wall? this would the windows front, back and side. this would make racing more realsitic
Make sure it's only in the appropriate cars, though. The GTRs would most likely use a lexan material or similar, same with the little clear 'window' on the open wheelers.
Often it fells out, often it cracks, but yes, acts different from glass and so it should be different in game, but there should be nothing that can't get destroyed, everything can and will when crash is enough hard.
Oh yea, of course. I wasn't implying that it should be indestructable, rather it should be different (and more resiliant) than the glass in the street cars.