Various Cheats:
Make a new driver profile and use one of the following words for the name. You can use anything for the tag.

greatnews - get all tracks

allthebuttons - get all cars

minime - get mini cooper S car

evilevo - Get Mitsubishi Lancer Alternatives

letmewin - Get all options

morrismode - Escort MK1 Car

gofasterstripes - fast cars

garywildass - Get Ford Puma car

nuttynets - aggressive cars

mimime - Get Mini Cooper S car

wavyourlefts - reversed tracks

wheelybig - large tires

boingboingboing - Bounce mode

shinybuttons - Shining cars

bouncybouncybouncy - Low gravity

curryforme - Turbo

eatthis - use handbrake button to shoot fireball