It's no easy task to find all the Question Mark Panels on the Whistlestop Summit track in Mario Kart World, which is why this ...

They aren't easy to find, but there are five Question Mark Panels scattered throughout Acorn Heights in Mario Kart World.

This ? Panel can be found at the top of the twisting chicane section that ends the Desert Hills circuit before the start/finish line. At the highest turn, make a U-turn on the outside of the turn to ...