Chuggington
Next Stop - Space / Scrub-a-Chug
S2 E105:
Next Stop, Space!: Hoot and Toot are afraid a meteorite from the museum might escape and destroy Chuggington, so they decide to return it to space. Scrub-A-Chug: Eddit and Hodge clean the underground tunnels using the Scrub-A-Chug – a fantastic piece of rolling stock with brushes that cleans the ceiling of the tunnel.