BikeBiz: In the British Medical Journal a doctor reports that his 27 mile commute is not speeded up with go-faster parts. Dr Jeremy Groves, an anaesthetist in Chesterfield, has published his one-man study in the Christmas edition of the British Medical Journal. Dr Groves cycles to work and owns two bikes: a lightweight £1000+ carbon machine and an older, heavier steel bike which cost him just £50. Over six months – and by flipping a coin to see which bike to take that day – [...]