I was rear ended twice by the same 18-wheeler in my Miata.
Thankfully we were already stopped at a red light, and he was just playing with his clutch, and there was no damage. But if my car had been any lower or the truck any higher, there would have been some real damage - the bottom 1cm of his bumper made contact with the top 1cm of mine. Any difference, and his bumper probably would have broken all my rear lights.