super bowl ads has everything talking today. was the clint eastwood car commercial a political message in disguise? i m wolf blitzer at the cnn election center. you re in the situation room. mitt romney may have notched another big win in nevada this weekend but the frontrunner is not resting easily right now. right now there are contests tomorrow in minnesota, colorado and missouri and topping the list of romney s new worries, a strong new challenge from back in the republican pack pac. our national political correspondent, jim acosta is taking a look, jim? reporter: mitt romney is finding out the big afterglow can fade quickly from a caucus or primary win. they are starting to focus on a candidate that s not newt gingrich. think sweater vest. rick santorum is out to show mitt romney what happened in vegas will stay there. hit penguin gop frontrunner once again on his health care plan in massachusetts. specifically, governor romney is absolutely incapable of making