Open the file My Documents18 WoS Pedal to the Metalconfig.cfg with Notepad or a similar text editor. Change the line:

uset g_console "0"
to
uset g_console "1"

Now during gameplay press ~ to get the console and enter a code below:

cheat money - Get 100k
cheat dealers - Unlock all truck dealers
cheat all - Unlock all dealers, drivers and get $100k
cheat drivers - Unlock all drivers
cheat star - Prestige upped by 10