Vintage looks, contemporary performance

Interesting read in this months British Medical Journal about bicycle weight and its effect on commuting time...

http://www.bmj.com/content/341/bmj.c6801.full

The power required to overcome drag on a touring bike—steel, carbon or chocolate framed—at 15 mph (24 kph) is about 170 watts.

Are they listed in increasing rigidity?

I wonder how chocolate frames respond to crash damage - tastily, I imagine

Also:

I toyed with the idea of blinding it but, in the interest of self preservation and other road users, decided against it.