If you don't regularly watch MythBusters or missed Wednesday's episode, you have got to see the following clips.
A little background: They were testing the myth that a head-on collision between two semis could sandwich compact car between them to the point that the compact car would not be visible until the semis were separated. After they attempted it and did not get the desired results, they decided to determine what it would take to smash a compact car that flat. What did they come up with?
Here's a shot of the point of impact.
Now here's the truly amazing clip: a slow motion close up of the car. It doesn't really crumple; it looks like it's just getting erased from existence by the rocket sled.