Manchester city season undefetead?

Just quickly, Wondering what other people's thought's are on Manchester city finishing this season undefeated are? 11 games in they are looking strong , i know there is still quite a way to go. My Thoughts are that they wont , they will concentrate hard on champions league and will eventually slip up, But in saying that i still think they are favorites to win the premier league and would love to see a Barcelona vs Man city champions league final...that's if arsenal don't make it.