Car Stunts We Haven't Seen?

After four movies, are there any crazy, over-the-top setpieces involving cars that they haven't done? That would be the only reason to continue making these movies, if they could outdo themselves. But we've seen cars drive onto trains, onto planes, onto car carriers, spin upside down under cranes, etc. What's left to do? Drive a car down a building? Onto a space shuttle?