All the components of the bicycle are powered by the electricity generated by the bicycle itself
Baidu, has presented a prototype of an intelligent call Dubike. This bike has several electronic components that are self-powered through the march generated by it and its intelligent brake system that accumulates energy in each braking.
Some of its characteristics is that it has an integrated system with several sensors distributed throughout the structure that analyzes different health states to assist the cyclist, as well as a system Integrated GPS inside the box.
More information: http://dubike.baidu.com/web.html