All tracks:
Enter WIBBLE as a code at the cheat screen. 
A sound will confirm correct code entry. 

Unlock racing levels:
Enter FREEPLAY as a code at the cheat screen. 
A sound will confirm correct code entry. 

O2 Liveried:
Enter UCANDO as a code at the cheat screen. 
A sound will confirm correct code entry. 

Programmer messages:
Enter MUNCHKIN, EDDROOLZ, or EDDIEPOO as a code at the cheat screen. 
A sound will confirm correct code entry. A programmer message will appear at the 
end of the credits sequence. 

Unlock Templar 
Beat season mode with first place in all races and have all objectives completed.