It is not so simple to pump gas out of holding tanks. When the tanks are filled, it's a huge gravity drop and not a pumping. All 10,000 gallons of a tanker trucks load is emptied into the holding tank in about a minute. It's like flushing a huge toilet.
Now getting the gasoline out is a slow process. I would suspect it was just stolen at the retail pumps with the assistance of employee/s. Each pump has a mechanical counter which can be jammed with a strong sewing needle temporarily.
I'm more concerned about whether Mustafa bin Yo-Mama can get his hands on enough gas by trickery/theft to go out and hurt some of us infidels. The gas seems to be missing, so where 'd it go?