By far, the worst NFS game i have ever played.
One of the new features in Carbon is the autosculpt feature, witch isnt really realistic because it allows you to widen body kits, rims, ect. Another feature is the introduction to the american muscle. Team racing and canyon duels are also available in this game witch kinda dumbs down the realism even more, nor are they that fun to play. And drag races were removed in this title.
The multiplayer can go up to 8 players and can be played with a friend as well through online play. Ranks are also included.
If less you dont care about the realism in the Need for Speed series, Carbon is the one Need for Speed title that just doesnt get you into the game due to its unrealistic racing and autosculpt feature.