Squeaky Clean Sprint

Squeaky Clean Sprint is a course featured in Wave 5 of Booster Course Pass for Mario Kart 8 Deluxe. The course is set in a giant bathroom, having racers drive along shelves, in bathtubs and through drains. It's currently unknown what placement the course will be in, though due to its presence in Wave 5, it will either be in the Feather Cup or the Cherry Cup.

Trivia

 * Internally for Mario Kart Tour, assets for the course can be found, referring to the course's internal abbreviation of "Mobbr". The "mob" opening indicates the course was developed as a new course for Mario Kart Tour, identically to Sky-High Sundae and Yoshi's Island. The assets in question include "JumpMobbr" and "JumpStickyMobbr".