No clearer title than this, It seems if you hit a truck at the right angle you're car starts to do this really weird flip, almost like a rubber band, except instead of the truck doing something like flipping over on it's side, or stop doing the flipping, the car gets launcher into outer space, Look below, I got a screenshot of one of the times it's happened to me.
I was I could be clearer, but there isn't an easy way to explain the bug. {F31264}
*Hit a truck with another truck (Doesn't matter what truck, I've seen it happen with both.)
*Car will begin to start flipping out of control if done right.
*The car gets so much momentum from flipping it goes into outer space?
*EDIT* I think I found the problem, when the car does the flipping it clips into the ground, is it possible that the game detects that something is in the floor and knocks it out? Instead of returning it to the ground it might just get launched into the air. Also might be important to say the glitch doesn't kill you when you land, infact, the worst damage would be just having another flipped over car!
It would be really cool to see this glitch found and patched, and as mentioned earlier, here is the screenshot. (Use the town in the picture to get an idea of how high we were launched!)