Found this GIF file the other day at a Russian picdump, and was pretty awestruck by what was going on:
A single search brought up the breathtaking video of what happens when a rocket sled traveling close to 700 mph meets a stationary object.
In effect, the vehicle, the sled, the 1-inch-thick steel plate behind the car, and a lot of the dirt simply cease to exist as we know them.
When emergency crews reached the site of United Airlines flight 93, they said there was almost nothing to recover; these sort of forces help to understand why. What we think of as solid objects are pretty much just liquid and gas at those speeds.
It also crossed my mind that the rocket-sled incident in “Kingdom of the Crystal Skull” was pretty cheap compared to reality.
The Old Wolf has spoken.