France has recently installed an experimental stretch of road paved with solar panels.  The intent is to see if the panels can be used to power adjacent street lights.   See http://www.msn.com/en-us/video/tunedin/france-has-unveiled-the-worlds-first-solar-road/vi-BBxv1eB?ocid=spartandhp
for a brief video, or http://arstechnica.com/cars/2016/12/worlds-first-solar-road-opens-in-france/ for a more detailed post.