Just crashed into a Lamborghini!

But non-supercars also get vandelised on a daily basis, so I don't see the point of the first point.
Fair enough on the second point, it's a pretty small difference though, for example on my beach cruiser it takes 5 minutes more to travel 8 miles than my fixed, despite the fact that it's exactly twice the weight and has tyres that are 3 times wider.

You are slow though. Faster riders get more benefit from better equipment. :P