Control Both Vehicles in One-Player Mode
Highlight the two-player option on the title screen, then press
START+A.
Level Skip
While playing, pause the game then enter one of these codes to
skip to the next level.
From level 1 to 2
Press R,L,R(2),R,L,R(2),L(2)
From level 2 to 3
Press R,L,R(2),L(2),R(3),L
From level 3 to 4
Press L,R,L(2),R(2),L(4),R(3),L
From level 4 to 5
Press R(3),L(3),R(2),L(2),R,L,R,L
From level 5 to 6
Press R,L,R,L(3),R(2),L(2),R,L,R,L(2)