Since I can't edit, just ignore my response. I was able to find some pics online (from a 2005) and the plastics are different.In my 2010 there is a foldable center tray in between the front seats. Maybe it is a cover for the hinge bracket at the bottom, close to the carpet? Not sure if this is the same on the earlier models.
Front Seat Tray Removal Photo Gallery by Whiz at pbase.com