Re: Fast(er) bike
I've seen those on racing bikes. A lot of the aero stuff goes on behind the vehicle. That's why short little cars don't get better mileage, they aren't shaped right (long enough) to allow the air to close behind properly. A couple years ago, motorcycle racers found that by directing the exhaust at the proper angle allowed gains of several mph.
What I was getting at with this thread is that because we have so little hp, there is an advantage to be gained by any amount of streamlining.