Hiro is a polite and gentle engine, but Diesel tries to teach him how to get rough with the trucks if he wants them to do what he wants.
Tropes featured in the episode:
- Arson, Murder, and Jaywalking: The Fat Controller's lecture to Hiro after three barrels of cream splash on his trousers:The Fat Controller: Hiro, you have caused confusion and delay...and terrible trouble to my trousers!
- Chekhov's Gun: The first batch of milk canisters, Diesel spills them when shunting, and when The Fat Controller opens up the truck with the milk, it spills all over him.
- Chekhov's Gunman: Thomas and Edward. Thomas for asking why Diesel was at the back of Hiro's train instead of a brake van, and Edward for noticing Diesel's reckless behavior earlier.
- Teach Him Anger: What Diesel tries to do with Hiro.
