Other success stories of the piezoelectric carpet

1. http://www.greenbiz.com/news/2009/06/15/sainsburys-rolls-out-kinetic-energy-generator
2. http://inhabitat.com/tokyo-subway-stations-get-piezoelectric-floors/
3. http://www.ecofriend.com/entry/future-perfect-piezoelectricity-rising-as-a-panacea-for-energy-crisis/
4. http://www.ecofriend.com/piezoelectric-generators-power-future.html