This has already happened in France and I'm loving it. The new solar panels over the parking provide shade, keep the rain off, power EV charging stations, send power back to the grid and some of them channel the rain water back into the system instead of letting it escape as unmanaged run-off. Paid for by the parking owners (mostly supermarkets). It's a good policy that would not have happened spontaneously by free market forces alone.

Hey there's a fucking idea

Based South Korea

Does this include parking garages?