1. Detroit dug the hole it's in all by itself (OK, with assists from the Administration, Congress, the oil industry and a completely unschooled public). Oil was always artificially cheap here and, even w/o CAFE pressure, the rest of the world was using far better sense in the design/mktg of new models than Detroit was -- and don't forget: some of those foreign mfrs are/were owned/controlled by the Big 3 (Opel, Volvo, come to mind). In fact, the "new" Malibu is actually an Opel Vectra, a design that's been around at least since 2006, when we rented one in Germany.)
So, whether in a last-ditch attempt to cover their "non-discretionary costs" or simply by the kind of blindly stupid, max it for the next quarter greed which cannot completely be dismissed, Detroit made obscene profits for years by forsaking what the rest of the industry quaintly calls "strategic planning" and "engineering" and simply enclosing and putting leather seats, trick sound systems and climate control inside pickup trucks to create overweight, underperforming SUV's and now, the only marginally more sensible "crossovers."
These people should be taken out and ... made to own SmartCars and Priuses.
2. Antitrust ain't that complicated, really. "Too big to fail" is just two words too long.