PS I wonder how much difference an aero helmet would make or a carbon bike, aero wheels, full on aero-tt bike, tri bars, skinsuits, light tyres, light tubes, aero-shoe covers, loosing a couple of kilos.....
For me a TT bike with standard wheels and none of the other stuff mentioned gives me almost a minute (comparing vs. times in the club's athlete's (normal road bike) 10. However I've never done a road bike 10 in really good still conditions so that's likely to be an overestimate of the advantage, not by much I suspect.