People are switching to mass transit when and where they can. Or, perhaps asking the boss to work more days from home. Instead of a “driving vacation” they may end up with a “staycation” instead.
Another possible influence for high prices is this: “As gas prices soar, so does hesitancy toward hurricane evacuations.”
We already know that there are some people who for financial reasons don’t evacuate when there is a hurricane warning. Not having the money for gas can certainly contribute to that type of decision-making.