Toby has small water tanks, meaning he is unsuitable for long distance work. In "Double Header" (in "The Eight Famous Engines"), Toby uses the Main Line to travel to the Works for servicing. Stopping at a water tower to refill his tanks, he is urged on to the next station by a new Signalman who didn't understand Toby's small tanks. Toby tries to hurry to the next station, but uses up the water and runs out of steam, leaving him marooned on the mainline, far away from the next station. Toby is pushed by James to the station, where some boys misunderstand the situation and suggest that James was unable to pull the Express, and Toby was needed to double-head the train.