Solar panels last a long time and in 30 years or so we will have enough to power the world for a century.

Solar panels and computer chips need large complex centralized factories, but that is basically 0%of the Land so there’s no problem with having both, as long as you don’t pretend that your solar powered homestead isn’t dependent on inputs like that.

Efficiency drops significantly as you go faster than 50mph, so they would be more practical for city cars that don’t do a lot of time on the highway.