So, the general assumption seems to be that we should let Detriot hang. No bailout - let the automakers declare Chapter 11 and reorganize, free of the onerous UAW contracts and everything else.

But what if, in this case, bankruptcy doesn’t mean Chapter 11?:

In order to seek so-called Chapter 11 status, a distressed company must find some way to operate while the bankruptcy court keeps creditors at bay. But GM can’t build cars without parts, and it can’t get parts without credit. Chapter 11 companies typically get that sort of credit from something called Debtor-in-Possession (DIP) loans. But the same Wall Street meltdown that has dragged down the economy and GM sales has also dried up the DIP money GM would need to operate.

That’s why many analysts and scholars believe GM would likely end up in Chapter 7 bankruptcy, which would entail total liquidation. The company would close its doors, immediately throwing more than 100,000 people out of work. And, according to experts, the damage would spread quickly. Automobile parts suppliers in the United States rely disproportionately on GM’s business to stay afloat. If GM shut down, many if not all of the suppliers would soon follow. Without parts, Chrysler, Ford, and eventually foreign-owned factories in the United States would have to cease operations. From Toledo to Tuscaloosa, the nation’s assembly lines could go silent, sending a chill through their local economies as the idled workers stopped spending money.

Restaurants, gas stations, hospitals, and then cities, counties, and states–all of them would feel pressure on their bottom lines. A study just published by the Michigan-based Center for Automotive Research (CAR) predicted that three million people would lose their jobs in the first year after such a Big Three meltdown, swelling the ranks of the unemployed by nearly one-third nationally and leading to hundreds of billions of dollars in lost income. The Midwest would feel the effects disproportionately, but the effect would reach into every community with a parts supplier or factory–and, to a lesser extent, into every town and city with a dealership.

Emphasis added. This is a worst-case scenario, of course. But in our current economic situation, the worst-case scenario seems to be all too common.