Is that thing even legal (well not with todays rules)? That is a ridiculously large wheel, and somewhat seems to defeat the purpose of trying to beat the hour record. Sure you might as well just stuff a motor down that extra long seat tube. Hell why even stop at the 4ft diameter, you can get that thing up to 6ft, and your back isn’t even straight. Dave Zabriskie (“the most aerodynamic man in cycling” according to Phil Liggett) could sort that out.