This Dupont Circle sidewalk turns footsteps into power
https://www.washingtonpost.com/local/trafficandcommuting/this-dupont-circle-sidewalk-turns-footsteps-into-power/2016/11/30/c69263f8-b020-11e6-8616-52b15787add0_story.html [www.washingtonpost.com]
2016-12-01 05:16
Not sure this will ever be cost effective (how low does the price need to be?), but it’s interesting project as a statement.