If your wondering where I got the code from, I got it from.
There is a cheat code for the game that unlocks the cops in quick race mode. Jdenm8 ( talk) 14:22, 1 December 2010 (UTC) Reply Now, it's been a while since I played the game, but I distinctly remember Police also being present in Club events (Traffic on roads, the aforementioned Police) in Evolution Mode, however the article states that they only appear in Factory Driver mode.
