If you’re going to design a cartoon racing game, it should be required by law that one level takes place on a roller coaster track. Really, is there anywhere you’d rather race? Perhaps the bottom of the ocean. This image of Mario Kart Wii showcases what appears to be a roller coaster inspired mine cart level for Nintendo’s new flagship racer. Is it the spark of originality that Mario Kart needs to keep from getting stale? Click on the image for a full sized version.