Filmmakers Heidi Ewing and Rachel Grady talk about being in Detroit working on their latest documentary, Detropia, at the same time that Chrysler was filming its now infamous Superbowl commercial, which featured Eminem and a choir of singers exalting Detroit's rise from the ashes. At the time, Ewing and Grady had no clue what was going on. But once the commercial aired, they were bowled over by the message of Detroit's overnight resurrection, and the public's willingness to accept it. In Ewing and Grady's vivid, compelling new documentary, they argue that a true "comeback" for this once bright city isn't as simple as a marketing campaign, and in fact, the concept of a "comeback" is abstract and unattainable.