Looney Tunes Series: Daffy Duck [Model DMG-YSA]

Super stage:
Step on the cart right at the beginning of the first level. This makes Daffy acquire a lot of speed as long as he doesn't touch the ground. If you manage to reach the end of the room at high speed, instead of loading the next room, the game will show a black screen with the text "Super stage" and you can play through a new set of levels.