I always thought those big boxes on the back of pick up trucks were just for guys to show off and be macho and whatnot. You know what I mean? Great big truck, with great big tires, great big dog in the back, and a great big tool box. I didn’t know that some of them were actually fuel transfer tanks. I suppose you learn something new every day. It’s kind of a nifty thing if you have a truck and a long way to drive. Some of them are a divided combination thing though, tank in the back and tool box in the front. So my guess as to what they were wasn’t that far fetched after all 
