SECRET CAR COLORS:  

from the main menu cube screen hold R-1 and hit square and you will get
"ALTERNATE COLOR 1"

from the main menu cube screen hold R-1 and hit triangle and you will get
"ALTERNATE COLOR 2"

from the main menu cube screen hold R-1 and hit circle and you will get
"ALTERNATE COLOR 3"

..check out the colors on the Hell Falcon!!


BIG/SMALL CARS: 

to get the "BIG CAR" goto the main menu cube screen hold L2+R2 and press up,
up, up, square, square

to get the "SMALL CAR" goto the main menu cube screen hold L1+R1 and press
down, down, down, circle, circle

the small cars are hilarious!