Copyright infringement much?

News
Universal Studios Japan Is Opening A Giant Mario Kart Attraction
Finally, a theme park for full of mushrooms.

News
Famous Mario-Inspired Go-Kart In Tokyo Lost Recent Lawsuit Appeal Against Nintendo
No blue sparks for you.

News
No MariCar For You; Nintendo Files Lawsuit Against Unofficial Tokyo Mario Kart
It’s been swell, but we’ve been Blue Shelled.