Drafting

If I'm riding along Clerkenwell Rd on the way home from 80 hilly miles in Kent or something, and someone happens to end up in front of me doing roughly the same speed as I'm doing, I'll take a tow, thanks very much.

The speed limit's 30mph AFAIK, and even if it were practical to ride at that speed all the way along there, I bet you don't maintain it, especially westbound...

it depend on the wind and the tunes, and i don't maintain 30 the whole way up, but i can get from old street roundabout to farringdon road without being overtaken by a car, but that depends on the lights.