It looks like Chuck isn't "staying in the car" for as long as we thought. Chuck Season 3 may be coming back sooner than we hoped. Instead of premiering in March of 2010 it may be back before the end of 2009. NBC has ordered six additional episodes of Chuck, and that's on top of the 13 episodes the network previously ordered, bringing the show’s season 3 total to 19 eps (just three shy of what’s considered a full season).

Here is the link to the EW article:
http://ausiellofiles.ew.com/2009/10/09/exclusive-nbc-may-move-up-chuck-launch/