It's not even just about pure speed, this accident could've happened right at the speed limit of that road for all we know, but we do know it was during an overtake so perhaps he was accelerating, I've never driven a supercar but I've driven and rode shotgun on a couple 300/400+ hp cars and the acceleration and torque of those it's just insane, I can't even imagine what a 800 hp one is like. No normal person is prepared to drive those things.
It's not surprising at all to me if things get nasty when a tyre blows up while you've got your foot down on one of those engines.