When a car hits a cement block going 10mph I'm pretty sure it isn't going to do 4 flips while flying 100ft in the air. Thats just with some cars, don't get me started on the UF1.
Although I've never hit a cement block in real life going 10mph so maybe this does happen.
The only way to prevent this from happening right now is not hit the cement blocks, and since this game is so fake I don't have that skill yet.
Man of Scarcasm,
Shelbs