>>1470246there are places where it makes sense
like the Toyota Prius had a solar panel that runs its air conditioning
https://www.youtube.com/watch?v=FWHexTrqqR8and there is some testing with solar panels for range extension
https://www.cnet.com/roadshow/news/toyota-prius-solar-panel-charge-efficiency/gives maybe 20 to 30 miles extra range
I kind of want to beleeb
something stupid like parabolic mirrors to melt things for recycling or as part of a thermo couple to boil water
but for now charging up small electronics with a portable solar panel whist out camping will suffice