Unlock All Tracks, Vehicles and Difficulties 
     At  the title screen using the Classic Controller press + (start)
to enter the Mode Select screen, then enter:

Up on the D-pad, L, R, Up on the R control stick, X, Y, ZR, + (start)

     If  entered  correctly,  you will hear a sound. Enter GP race and
you should see Master difficulty unlocked.

     On the Course Select screen you should see two new cups unlocked:
Joker Cup and the X Cup.

     Then on the Select Machine screen you will see every vehicle 
unlocked.


Unlock Cups 
Unlockable              How to Unlock 
Joker Cup               Clear the Jack, King, and Queen Cups 
                        on Expert Difficulty. 
X Cup 	                Clear the Joker Cup on Expert Difficulty. 
Master Difficulty       Win the Jack, Queen, King, and Joker Cups 
                        on all three difficulties. 


Alternate Title/Main Menu Screens 
     Complete the following to unlock different Title/ Main Menu Screens

Unlockable              How to Unlock 
"Comic"                 Complete Jack, Queen and King Cups 
                        on all difficulty levels 
"Mechanical Cutaway"    Complete Jack, Queen, King, and Joker Cups 
                        on all difficulty levels 


Unlock more vehicles 
     To  unlock  more  rows of vehicles, you must obtain a number of X
marks  on  the cups. You get an X mark for each difficulty you clear a
cup  on (If you clear a higher difficulty before clearing a lower one,
you will receive an X for all difficulties up to the one you cleared).

Unlockable              How to Unlock 
2nd row of vehicles     3 X marks 
3rd row of vehicles     6 X marks 
4th row of vehicles     9 X marks 
5th row of vehicles     12 X marks