Part of buying a fast car is showing off with it, so when this guy got onto a dyno tuning track to test the output of his Shelby GT500 Mustang, he thought he'd look really flash to everyone standing around with camera phones. Then this happened.
The GT500 went so fast that it broke the dyno track in an accident that could have been far more serious than it actually was.
There's even a rear angle here from another guy filming.
Whether the GT500 survived or not, it's clear that this is an expensive accident.