I had a shop mechanic drive my VX through toolboxes and the cinder-block wall in his bay last year because of something similar (I heard it happen but didn't see and the sound alone was painful). He tried to blame my brakes but the fact is, his big old work boots caught both pedals and the more he thought he was stomping the brake, the more gas he gave it.

Needless to say, I had the brakes looked at when she was in the body shop (their treat of course), and there were no brake issues. Still, almost $4k in damages.