Wind.Stingray / wind power machine

In the journey, cell phone, camera and video game are the products for people to pass the time. When the battery is dead always cause a lot of problems, especially cell phone, it will unable to contact customer to discuss work or contact to friends to pick you up.
Wind Stingray is different to the old and passive wind power machine, it use the wind drag when public transport runs on the road, and transfer it into electricity, provide passengers to solve the problem that when the electricity runs out.