Just found this very interesting looking website whilst browsing info about rechargeable front lights; but that's another post - ! My wife and I both cycle commute on a daily basis; the heavier the traffic, the more fun we have - ! Something to do with sneering whilst all those 'superior' folk stuck immobile & fuming in their cars as we sail by I think - ! We have ten bikes between us, mostly road types and have recently invested in two Brompton M3Ls, worth every penny - !