I saw a demonstration on telly once, of how reversing the forks makes a bike more likely to travel in a straight line. (They reversed the forks, gave it a shove, and it rolled for ages before its speed dropped to stalling speed). Since the coaches are mainly riding a straight line, maybe it helps!
I saw one chap riding the opposite way to all the others this morning, I don't think his team are going to medal much... Or maybe he was trying to counteract the forks....
On Saturday, I'm sure I saw a couple of Boris Bikes in the coaching peleton.