I think the main problem with speeding is that it tends to be done to excess by people who are way over confident i.e. think they can handle the car when they can't. Drivers should be painfully aware of their own inadequacies and drive within their limits, and the limits set by the road conditions, weather and general environment.
I totally disagree with the speeds that that moron got up to and I hope he 'enjoys' his time at the pleasure of HRH.
I am no angel and have been guilty of speeding. Having gone from a ropey old Vauxhall Cavalier to a Honda Prelude 2.2 VTech, I hit a stupid speed on the M4 without even realising it. When I did take notice, I scared myself silly and slowed right down. I'm an average driver and feel that my driving has improved over time, but not to the extent I could handle the car at high speeds.
Drivers who kill, maim, injure other drivers through DANGEROUS driving (not necessarily related to speed), should be imprisoned. A fine and a smack on the wrist isn't enough.