Unlock Characters in Cars The Game WITHOUT CHEATS for PS2?

May be...

OK here is the deal I have used "YAYCARS" this does not work.



I want ALL the cars for my PS2 game.



If someone has a cheat that really truly works 100% perfectly.



Or if you can tell me how I can unlock the characters with out cheats would be lovely.



The first answer that actually help gets 10 whole points.



P.S. ~ PS2, Cars The Game.



Thankyou in advance.

find unlockables in game



or win races in a fast time