Rolie Polie Olie (1998)

S5E9 Tug-A-Wheelie / Always Chasing Rainbows / Follow Yer Nose

Wheelie tries to cheer up Olie, Zowie, Billy, and Pollie when they realize he can't always make it to the park. Later, Olie and Zowie are told they can't play until they find a rainbow, a Rolie Trolie, and a pot of golden lugnuts. Then, Olie's nose pops off and rolls away, leading him on a wild chase all through Polieville Park.