Start the game with these command line parameters:

 -allrace - Access to all races
 -allcars - Access to all cars

 In the game, press [Ctrl][Alt][Shift][F7] until a box appears on the
 screen, then type in any of the following codes (the codes marked with
 a * will lead to NO SCORE):

 /big       - big people
 /bridge    - bridge very quickly *
 /dizzy     - spinning sky
 /fuzz      - toggles cop radar *
 /grav      - half gravity *
 /nodamage  - turns damage off *
 /damage    - turns damage back on
 /nosmoke   - turns wheel/damage smoke off
 /smoke     - turns wheel/damage smoke back on
 /postal    - horn fires mailboxes
 /puck      - player experiences no friction *
 /slide     - ambient cars have no friction *
 /swap      - swaps the train with a string of 737s
 /talkfast  - commentary plays fast
 /talkslow  - commentary plays slow
 /tiny      - tiny people
 /ufo       - replaces planes with UFOs

 Type these in tour mode as name:

 vasedans       Cadillac      Generic car
 vasedanl       Bullet        Generic light car
 vavan          Ford F350     Van
 vadiesels      City Bus      Diesel
 vacompact      VW Bug        VW Rabbit
 vapickup       Ford F350     Pickup truck
 vabus          City Bus      Different-looking bus
 vadelivery     Ford F350     Delivery truck
 valimoblack    Mustang GT    Black limo
 valimowhite    Mustang GT    White limo
 valimo         Mustang GT    Random color limo
 vataxi         Cadillac      Yellow cab
 vataxicheck    Cadillac      Green-checkered cab
 vaboeing_small City Bus      Minijet

 Name cheats:

 NOTE:  Most of these cheats will disable race result monitoring and
 score.  You cannot unlock new vehicles with these cheats enabled.
 Click New in the player selection screen and enter your name as any of
 the following codes:

 amizdA eoJ    - All traffic vehicles drive in reverse
 Big Bus Party - All traffic vehicles are city buses
 Jet Planes    - All traffic vehicles are airplanes
 Showme Cops   - Displays all police units on the map
 Tiny Car      - All traffic vehicles are compact cars
 Warp Eleven   - All AI is ten times faster