Have you heard about the Solar Scooter? No joke, Don Dunklee has developed a way to charge his electric scooter by solar power and he has created an instructional that you can download on how to do it. According to his guide:
"The basic bike is a stock EVT 4000E available from various dealers around the U.S. The rest of the system consists of a Xantrex (formerly Trace) C-40 charge controller, and 4 Atlantic Solar 30 watt, 16 X 25 inch panels mounted two to a side. The panels fold open while in charging mode and are closed while driving. Mounting hardware is basic off the shelf parts available from any hardware store."
The result is something a little hokey-looking but useful and very affordable for Don's commute to work.
Check out Don's Solar Scooter at Build It Solar.