Tesla put a bunch of their charging stations onto solar panels with battery backup and they have large batteries on trailers with chargers they deploy to meet demand during peak travel periods. In a world where everyone or a lot people have a home battery system with solar neither gas stations nor the electric grid will matter as much possibly not at all. Think about it this way. Is there a way for you to buy equipment to make your own gas from resources on your property? Is there equipment you can buy to generate your own electricity?