This week we welcome Sheila Ronis, a defense and automotive expert who will discuss the role the car companies play in military matters. In particular we'll ask why the Pentagon was staunchly against letting GM and Chrysler fold, and why it believes that would have placed the United States at a strategic disadvantage. And, we'll definitely be getting into the news of the week as Ford finally looks like it will kill off the Mercury brand. Plus, has the BP oil disaster brought us to a petroleum tipping point in which we say goodbye to fossil fuels? Conversely, many are saying Carlos Ghosn is overly optimistic in his prediction that Nissan will sell 500,000 EVs by the end of 2014. John McElroy's in studio with Peter De Lorenzo, the Autoextremist, and David Welch from Bloomberg BusinessWeek.