"Under the Pentastar" is a weekly recap of some of the stories at Chrysler Group. This week's edition includes Chrysler Group's December 2012 and 2012 total sales figures, MY2013 Ram 1500 wins AOL Autos and Detroit Free Press "Truck of the Year" and Chrysler brand launches a new advertising campaign for the new 2013 Chrysler 300 Motown Edition.