I accidentally found a glitch earlier when playing on my switch, I was looking at karts I hadn't unlocked yet before the game started and when the lobby kicked me out of the customisation menu I was playing with the kart! Cool little glitch that will definitely get patched soon so have fun with karts you still need to unlock while you can :D

It doesn’t unlock items, just lets you play as them. Once it’s patched you’ll need to unlock them

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