Wait, some people seriously thought solarpanels on a roadway surface was a viable energy solution? The idea that even using an acrylic surface to protect the solar cells would survive road traffic and other environmental damage is absurd. That's not to say that large projects where solar cells are installed on great tracts of land or already existing infrastructure won't happen, but it certainly won't happen on roadways. Not using solar cells at least. Perhaps something thermal could work, but there are still a ton of engineering obstacles to overcome before anyone would seriously look at it as an energy source in the macro.