This was my original theory. I was looking at Google satellite photos of their Roanoke, VA site, and you can see there is a regular gas station nearby, but is

This was my original theory. I was looking at Google satellite photos of their Roanoke, VA site, and you can see there is a regular gas station nearby, but is connected and has a giant loop for tanker trucks to fuel up. In past jobs where I had driven a company vehicle, there was always a special gas card with a PIN, and when you would swipe at the pump, it would ask you to enter the current mileage of the vehicle. If you cannot verify or authorize transactions, there is no point in giving away free product.