Over $5/gal., that's just ridiculous. They're doing it because school is about to get out. Most families can't afford to do more than camp and Yosemite is one of the favorite spots. I hope it backfires in their faces.
El Portal always has high gas. They usually are $.75 to a dollar above everyone else. I see these poor guys from out of the area filling up their RV's and pickups. There is a sign on the hwy saying next gas 30 miles or something. It also says last gas for x number of miles. They should have a sign warning about the high price ahead.
Fuel distribution grids are often the reason for varying prices. Distance from the wholesale terminal to the stations and that type of thing. Here in north Alabama the gasoline in the northwest corner of the state is usually cheaper than it is in the central and eastern areas.
We had a Chevron station just 3 miles from the house that always had the lowest price around, but their roof collapsed from one of the big snowstorms we had in January and they are still rebuilding the place.
We don't drive that much, or that far, for gasoline prices to make a big impression in our budget. This is a good thing for a retiree. If I was still doing the daily grind of driving to work it would definitely affect me.