Re: Tesla semi?
Good thing that truck drivers own their own personal trailer and never tow anyone else's. Or a flat bed.
If this really takes off I can see solar roof panels being retrofitted to trailers, or panel modules that can be attached on top of a shipping container in case the trailer is towed by an electric truck. And if shipping companies have a mixed fleet of solar and non-solar trailers, they can load the solar one if it's Jones The Electric Trucker who's coming to take the trailer to its destination.