This week we're getting inside the head of General Motors' marketing chief, Joel Ewanick. We'll be asking him what sort of message GM plans to get out to the world as it continues its uphill battle to shake the "Government Motors" moniker. What advertising is one the horizon? Why did GM pull out of the Super Bowl? Is there a value to social media? Joining John McElroy in the studio is Peter De Lorenzo, the Autoextremist.