Mario Kart: Double Dash!! Tips

Cool Jump Thing
Not a cheat but it's pretty cool. On Rainbow Road (it works elsewhere as well, but it's harder), right after the first few turns you hit some boosts. Right as you fly off the first one, hold R and turn around. When you hit the bottom, your car will go flying into the air. It's pointless, and you might fall off, but it still is fun.