As I thought, there are only 4 superchargers in Atlanta, none of them convenient to my house. But, if I had an electric car, I would charge it at home so that wouldn't matter. As I said, there are chargers at the FAA office and at shopping malls in Atlanta, but I never see them in use.
On the way to Staunton, VA there are 2 superchargers. One is off the roads I use. It would be a long detour. The other is nearly 500 miles from Atlanta, so it is too far. It is almost too far for a Prius, which has a 600 mile range. A 600 mile range means you have to fill up after 500 miles. You don't want to come without 50 miles of running out of gasoline (or electricity) in the middle of nowhere in Virginia. The only gas station shown on the GPS might well be out of business. Or it might close at 6 p.m. when the owner goes home for supper, as one of them did.
Of course there will be more superchargers in the future if electric cars become popular. But never as many as there are gas stations, for the reasons I described above.