What mpg can one realistically expect to get from a Honda Super Cub? (I know that wikipedia cites its mpg at 340 on a closed track at 30km/h, but what can be expected in real world conditions?)
Go to your local bike shop and ask them to put a Gyro system on your bike. A gyro allows you to have your front brakes in place and still do complete handlebar revolutions. If you want to do the modification on your own, you can order a Gyro from Danscomp.com
Good luck
P.S. A gyro will cost...