To use these codes you must be fast enough to have your time
entered on the high score screen (make sure to turn checkpoints
on from OPTION screen.)
knacked – Reverse tracks
whoooosh – Nitros (press HORN while racing)
mjcim.rc – Tiny cars
sausage – Bonus cars
Note: After entering the codes make sure you save your game.
Otherwise, you will have to run this each time you play.
Also, if you use the Nitro code don’t try it until you’re in second
or higher gear. Otherwise you’ll spin out.