- "...the one-eyed truck still wanders the forest, blowing his whistle and looking for a headlamp. Maybe he wants yours!"
- ―Kelly, Percy's Scary Tale, Jack and the Pack
According to the tale, it was an old steam truck who had one of his headlamps stolen by a loader. The loader managed to get away, but, according to legend, the one-eyed truck still haunts Maithwaite Forest looking for a new headlamp.
After teasing Alfie and Percy about the story, Max and Monty were sent to dump some dirt at Maithwaite Forest. They heard a shrill whistle and saw a single headlamp, becoming convinced that it was the one-eyed truck. They ran away in fright, but soon they felt silly when they realised it was Thomas.
- The one-eyed truck is based on the fable tale about "the One-eyed Jack".