Dumbass father for giving his 18 year son access to a 500hp car.
Dumbass friends for getting in his M5 knowing they were going on a high speed run, trusting an 18 year old with a fast car.
Dumbass driver for pushing the car with a finite amount of room. I'm guessing at 150 or so you start outrunning your lights.
I feel sorry for the rescue workers that had to clean up the mess and for the parents and family whose lifes are forever changed.
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"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower"
-Mark Donohue