Subject: The Girl in the Thong on the back of the Crotch Rocket and other Aerodynamic Musings.Not ten minutes ago on my ride into work I was passed by a rather sensational sight. A jaunty young couple astride one of those sensational looking Asian racing motorcycles passed me going, of course, very fast. The young lass on the back, clinging to her beau for dear life at the break-neck speeds they were travelling, had inadvertently worn jeans that were too low and knickers that were too high. ( no jokes about the frequency of my panty-posts- I can't explain it...) What was fascinating was that, as the boundary layer of air surrounding this sporty couple attempted to reassemble in their aerodynamic vortex it also lifted her top, revealing that she could have done a better job matching her intimate ensemble for today. Anyway. It got me thinking about the aerodynamic implications of rear hydration units and how much differently air would perform at lower speeds. I estimate these two were going over 50 M.P.H. ( in a 35...) so the aerodynamic effect is exponentially larger at that speed, over double the normal ground speed of a very fast triathlete on the bike. I've long been convinced that integrated hydration and accessory carriage like we see from Trek and Cervelo built into the bike is not just a small improvement in aerodynamics, it is enormous- as this young lady's sensational high speed wardrobe failure may suggest. Anyway. I need a Red Bull. Here's a one of these things, which I really like: ![](http://images.nationalgeographic.com/wpf/media-live/photos/000/006/cache/platypus_662_600x450.jpg)
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