What about it, for curiosity's sake? Is it the fumes? The crazyness of literally going so fast as to barely retain control in tons of metal? Or for things like motorbikes, doing all that without tons of metal for a modicum of protection? lol
I love motorsports, but no matter the power source, the extreme stuff kinda' takes having a screw or two loose...
So... things not actually restricted to internal combustion engines? That sounds... rather petty and foolish.