Massive component failures in race cars are thankfully rare, because when they happen at speed the result can be brutal. Just ask Pete Tryce. Or, better yet, watch him flip his kit-car Cobra at 130 mph early this month at Willow Springs.
Seeing a bad roll from the outside is scary enough. Seeing one from the inside is a whole new perspective on the violence and suddenness of a crash. This is no drawn-out Hollywood stunt; just six seconds of a car bashing itself to death and a driver proving once again how important it is to wear a safety harness and a good helmet. Also: GoPro mounts are surprisingly sturdy.
What's left of the car is now for sale, presumably with a special note in its on-track logbook. Make an offer.
(Hat tip to everyone who forwarded this, OneHotLap!)