That is a great point. For a short term crisis, you would be able to get your hands on some fuel. If it dragged on for many years, fuel would be harder and harder to come by.

My car needs about 6.5 kilowatt-hours of electricity to travel about 17 miles in summer time. In the winter time less than 7 miles if it is really cold out.

You'd need quite a major solar setup to be able to produce that much power. A setup which would attract gangs.