Well apparantly one of the problems the South is having and especially the Carolinas is that while 20% of the NATIONS fuel comes from those refineries in Texas. MOST of the South and the Carolinas (where we live) comes via a pipeline from Texas. So it is going to be much more difficult and much more expensive if they have to truck in gas instead of the pipeline supplying it.
And yes, people fill up tanks because without electricity, you can't buy gas. When Charley hit in Florida and our area was without electricity, there was gas at the gas stations, but no way to pump it. My husband actually drove 45 miles to get gas at a station that had electricity to pump gas. One friend of mine was without power for 45 days following Charley and they had to rely on generators. They had filled up their cars and extra gas cans, but still ran out of gas for the generators and getting more was a real problem. Compounding their problem was that they were not on city water, so had to rely on a well with an electric pump for water, so they couldn't even take showers. Her husband was able to rig the generator to the pump so they could get some water.