daylight saving bike by jungha lee from korea
designer's own words:
While people are riding this bike, it generates the energy to charge the battery. When they park and connect the bike to the dock, it takes the charged energy from the battery of the bike. The energy charged by many bikes during daytime is being used to light up the street lamp at night. Instead of using fossil fuels, riding bikes can be an alternative way to generate the energy.
Daylight Saving Bike
Generate, Send, and Use the energy!