The wind-human hybrid rickshaw work using windmills made from drum which will rotate when the pedicab began to walk. The windmill is connected to the rear wheels with a side-mounted gear, so when the drum began to rotate its will helps in acceleration, making it easier for the pedicab driver to pedal.
![rickshaw1_1I51B_24429.jpg](https://proxy.imagearchive.com/a0a/a0ac141390964bb0ef251ef501fbb268.jpg)
http://earthalternate.blogspot.com/2010/06/wind-power-rickshaw.html