If you slip on a banana, and are about to spin out, hit the brakes. You will stop (not spin out), a music note inside a balloon will appear next to your driver, and you will have saved yourself a lot of time.
Special 150cc Cup
Finish all the regular 150cc cups.
Special Credits
If you finish the regular cups, plus the Special Cups, 150cc Mode, and the Special 150cc Mode, you'll unlock a different set of credits.
Special Cup
Finish all the regular cups.
Starting Boost
During the countdown from 3..2...1... GO! Step on the gas pedal as soon as GO! appears. This will give you the initial startup boost.