Is it about the bike? At the very top level, as Chris Froome demonstrated yesterday, it's even worth swapping bikes to gain that crucial advantage. But surely  a top rider will beat any of us run-of-the-mill cyclists however much he is handicapped by being made to ride a heavy, slow tank of a bike? 

That's what The Guardian's bike columnist Peter Walker and elite racer Iain Cook set out to find out in this video. Walker scored a rather luscious BMC TMR1 aero rocketship and lumbered Cook with a succession of, ahem, more practical bikes: a £250 Pinnacle, Walker's own Dutch commuter complete with child seat and basket full of newspapers and, of course, a Boris Bike.

Starting at opposite sides of the Herne Hill Velodrome, they duked it out in a series of two-lap individual pursuit sessions to determine whether man or machine reigns supreme. The results might surprise you.