9. Going Nowhere Fast/The Missing Stink (S02E09)

Title: 9. Stuck in Reverse/The Lost Smell Plot: Stuck in Reverse When Fast accidentally gets trapped in reverse gear, Stinky and Dirty set out to assist him in moving forward. To their surprise, they realize that the quickest route to the train station is actually to travel backward in a circular path! The Lost Smell After a visit to the car wash, Stinky finds that he has lost his signature scent. Determined to reclaim his distinctive "stink," he embarks on a quest that turns out to be more challenging than he anticipated!