Because with a head of hair like this guy has, there is no other option than to hit 207 mph on a frame that is about as close to a bicycle as you can get with the crank arms swapped out for a fricking rocket engine.
Back in my younger days, I hit 61-mph on my road bike while descending a steep ridge road on O'ahu. The pedals hit their resonance frequency and my feet were going numb from the vibration. Combine that with a sharp turn I took a little wide and I'm lucky to be alive. I try not to exceed 45 or so these days.