Type these codes during the main menu or in a game pause:
wreckedonspeed Toggle Slower Cars?
iamalazybastard Toggle Debug Menu
jackimflying Toggle High Gravity
bringmebackdowntoearth Toggle Gravity Normal
bigandpink Toggle Hard Difficulty
flymetothemoon Toggle Medium Gravity
networkfun Toggle Special Macros?
givemescorpio Toggle Scorpio League
reflections Toggle Mirror Mode
trotters Toggle Expert Difficulty
givemetaurus Toggle Taurus League
billythewhizz ???