ahhh.. At first I thought it is an electric bike powered by solar energy..Really I can not imagine why this bike needs solar energy, it has a pedal system.. At the glance of the bike, you would know that it runs by pedal.. then, a read the link.. I found out that the rim of the wheels had rotating solar panel and it would collect the energy from sun and store to a battery.. then stored energy is can be used to charge something.. great hunt