In high school our tech class competed in a solar bike race. Our bike had a little motor on the back wheel, and it was more of a power assist type of system. You still had to pedal, but it was useful for going up hills. We actually won the Colorado Solar Bike Rayce sponsored by the National Renewable Engergies Lab near Boulder. The race was 100 kilometers and we took a one hour break for lunch to recharge ourselves and the bike. None of the team members were actually into riding bikes at the time, so the win was pretty good for our little group of nerds If you google "Solar Bike Race" it will give you some web pages with examples of solar bikes. If I had my yearbook with me I would have scanned the picture of our bike for you.