To use the cheat codes, you must first enable the console. Edit your "\My Documents\18 WoS Pedal to the Metal\config.cfg" file with Notepad. Change the line:
uset g_console "0"
uset g_console "1"
While playing, press [~] (tilde) to being up the console, then type any of the following cheats:
|cheat all||All Drivers, Dealers, +$600k|
|cheat money||Get $100k|
|cheat drivers||All Free Drivers|
|cheat dealers||All Truck Dealers|
|cheat star||Prestige Updated by 10|