To me car problem doesn't explain the speed. Sorry, I'm one of these guys that thinks most Toyota drivers that say their throttle stuck and they couldn't do anything is a load of crap.
Yes you can floor the car, yes the pedal can stick and yes in many/most cases there is time to do something about it. This guy just heads off the road at one fast clip. If it was mechanical, and throttle stuck...why's he off road at that speed instead of coasting to a stop after turning off the ignition or tossing it in neutral. And yeah, I realize most people freeze and freak out in emergency situations, but that's what seperates some of us from the rest of the herd.