Where the Streets are Paved with Solar Panels
It hasn't happened yet. But if all of the streets, sidewalks and bike lanes in America were repaved with solar panels, these solar roads would generate three times the amount of energy that Americans use in one year. AND this would reduce greenhouse gas emissions by seventy-five percent.
Obviously this huge undertaking isn't going to happen next week or next year. But it's doable. The sooner a massive project like this gets started, the quicker.
The author of the linked article compares the skepticism directed toward massive solar energy projects to the skepticism directed at the Wright brothers before their first flight. Whether or not these two situations are comparable, there's one crucial difference. Before the Wright brothers' first flight, human flight was still just an unproven theory. Solar energy, on the other hand, is already being widely used.
The mastermind behind the idea of solar roads is Scott Brusaw of Solar Roadways. Here is the FAQ section of the Solar Roadways website.