Considering the game, it's probably not that big of a deal. While playing Midnight Club: Los Angeles, it looks they wanted to add a malleable story, but they dropped the idea and left the dialogue and cutscenes anyway. There is one instance were an opponent's vehicle is sabotaged; it's hinted that a "friend" helped you with this, but you had no control over it. There's a time were said friend rants at you for not helping him during a cop chase. At the end of the game, he states you could been partners. While you play though, there aren't any leads to these scenes. You don't really have a choice to help in the cop chase, and there are no offers made become a partner with the guy.