https://thenextweb.com/gaming/2018/06/26/nintendo-labo-goes-mainstream-with-mario-kart-support/

Nintendo finally joined its niche Labo side project with its main library today by adding support for it in a major Switch game.

The details: The new upgrade lets you use the Labo Motorbike controller with Mario Kart 8 Deluxe on the Switch. Specifically, you can now ride the Toy-Con, the RC car from the Labo Variety Pack, in the game. You use the Labo the same way you’d use an arcade controller — twist the throttle, lean the handle to turn.