No, there's nothing unusual about truck stop fuel...except it's likely to be more fresh than what you'll see at a car pump. For that reason, I sometimes go out of my way to stop at a truck stop to take on fuel.

The fuel comes out of the truck nozzles faster 'cause most trucks have 100 or so gallon tanks, and the drivers want to get the tanks filled up in a hurry so they can get back on the road (they're paid by the mile, not the hour for the most part). So, a higher pressure pump's feeding the truck nozzles.