Rather than Chapter 11, don't you think it's more likely that if the bail outs don't happen GM will likely sell off its assets to a competitor (I'm guessing a foreign one) who probably has a better chance of making those assets useful than GM itself has?
GM's assets are largely valueless to any such entity...
- At the current point in the game, they don't have a lot of technology that another automaker would need, although they probably do have bits of valuable IP here and there (particularly in electric vehicles).
- Their brownfields are worse than useless. No sensible outsider would want them. No American company would want them either. Whether it were a US carmaker like Ford, a transplant like Toyota or Hyundai, or a maker that doesn't sell cars here today (like Tata), they'd be better off with a greenfield.
And none of the transplants are critically undercapacitized, especially not in a global, long-term sense.
Any third party motivated primarily by revenue / profit growth (as opposed to any kind of civic obligation or love for GM) would be better off just growing their own business opportunistically -- the ROI on the customers they steal from the sinking GM ship would be so much better than the ROI on taking GM assets over in order to get a larger share of those customers.