In this final (?) part of our Hour Record trilogy, we talk about the rules of the modern Hour Record, how marginal gains start really coming into play, the theoretical upper limit for the hour record and how close we are to it, and the future for the hour record. We give extra focus to Bradley Wiggins' hour record, in part because it comes as close to a perfect attempt — apart from uncontrollable factors — as we've ever seen, and in part because Josh has some fascinating inside knowledge of Sir Wiggins' incredible feat.