These cheats will help you progress in the game if you are struggling. Just pause the game and enter the code for the effect you want to enable. If the code has been entered correctly you will hear a confirmation sound.
I have discovered a way to fly above the level first put in the lighter car cheat(pause game and press L1, R1x2, L2,R2x2 bleep will confirm correct entry then, the slow motion cheat(R2, L2, L1, R1,left, left, left)then when your car tips on to its roof hold circle and left/right(your choice)and hold you will soon notice your car spiraling upward NOTE. this looks cooler if per formed while your car is billowing smoke, if you let go your car will come crashing back to the floor and if you did it for long enough your car will reach the top speed of 1118 KPH