Worth a watch for a quick explanation: http://youtu.be/Ep4L18zOEYI Evidently, the protoype for solar roadways has been around since 2006. An engineering couple designed solar roadway panels to replace all hard road surfaces, as well as sidewalks, parking lots, and outdoor playing surfaces (basketball courts, tennis courts, etc). These solar roadways are self heating, making snowplows, shoveling sidewalks, and salt obsolete in the winter. They are also programmed with LED lights, so that traffic can be diverted for construction easily, as well as warn drivers when there's an obstruction ahead. It's estimated that if all the road surfaces in America were converted to these solar roadways, we'd produce 3x the amount of electricity than we are currently using. Admittedly, I do not know the start up costs for this. It might be astronomical. But I say it's worth looking into. What say you?