I thought, maybe car windows could get broken also?
Like it's broken, you keep driving but can't manage the max speed anymore because the wind/air gets into your car and it blocks some speed also?
Not only rear window, also door and back windows could get broken.
Like car goes over-roof and maybe like all windows get broken then?

+1
Would be nice, but I`ll bet the DEV`S has this planned allready
My bet would be that it will be implented when the new damage system arrives, since the one we now have is on a early level in development.