Secret car locations & other stuff
OK here's some help:
Secret car on 1st lvl= Parked beside a row of posh houses (Near that building shaped like a ramp).
Secret car on 2nd lvl= On the monorail track (Go up some stairs and your there)
Secret car on 3rd lvl= In a big open crate (On the giant ship)
Secret car on 4th lvl= Parked in between two trailers (In the trailer park)
Secret car on 5th lvl= Where the big fountain was on the 2nd lvl.
Secret car on 6th lvl= Half-buried in the purple building on the pier.
Secret car on 7th lvl= Ontop of Krustyburger.
Here I have logged some cheats:
Jumping car cheat: , , , X =square O=circle /\=triangle
Invincible car cheat: /\, X, /\, X
Super speed car cheat: /\, /\, /\, /\
????????????????: /\, O, /\, O
To jump with car after using the cheat, press L3.
The Action Replay cheats for this game are awesome!