At first there were Hovershoes in this game. But they were removed later on.
They were mostly added because of it was really hard to make Hoverboard Artwork.
Petey PiranhaIn the first version, Petey Piranha was playable, but he was removed because he was way to big so he would block the screen for the player. He can however be seen in the background of the course Piranha Valley.
At the very beginning of the game, there was a big misunderstanding. There was a typo and instead of Super Mario Hover Race, it was Super Mario Hoover Race.