Solar Roadways Incorporated is an American company based in Sandpoint, Idaho, aiming to develop solar-powered road panels to form a smart highway. Their proof-of-concept technology is a hexagonal road panel that has a glass driving surface with underlying solar cells, electronics, and sensors to act as a part of solar array with programmable capability. The concept has been widely criticized as unfeasible and uneconomical as either a road surface or a photovoltaic system. Wikipedia