Have you seen "No Country For Old Men" yet? - no country for old men blowing up car

Pressure death trap air, what is it?

He seemed to be an air tank with a nozzle similar to that of the air put in your tires.

Can a small air-box to create this size penetrate much more pressure on the bone? I refer to the game, when the old man returned with a police car and blows a hole in the skull. Is this realistic?