Philip sees Toby for the first time and is under the impression that Toby is a diesel boxcab. He tries to befriend him, but Toby finds him too overwhelming. Philip persists however, insisting they have a race to the quarry, believing that friends have to like all of the same things.

Diesel struggles to maintain his rough demeanour after he finds some ducklings. Thomas comes across this and blackmails him to behave by threatening to tell 'Arry and Bert about Diesel's ducklings. Diesel tries to be kind, but he becomes split between being threatened by Thomas and looking tough in front of 'Arry and Bert.