I think that it would be far more feasible to transfer the energy from the asphalt heat to something useful.
If solar panels will be used, it’d be far better to have them along the highway, rather than have them be the highway.
This is just some kind of money grab. No way you can build a road out of solar panels. It doesn’t take much force to break one much less having a large cargo truck running over them on a daily basis. BS