Put in these codes as player #4's Name:

Code - Granted Wish

world class - Get A8 Championship
turbo challenge - Get A8 cars for 1 player and Time Trial modes
max power - Get Citroen WRC Car
throw me a bone - Get Citroen Saxo WRC
give me time - Get 1 extra minute of service time
group b - Extra Car
lambaaghini - Extra Car
mooserati - Extra Car
arcade action - Arcade mode
arcade unlimited - Energy for arcade mode
spud car - Extra Car
precious things- Extra Car
furry dice- Extra Car
mf hotback- Extra Car
tree hugger - Extra Car