Being the DIP would entitle the government to be the first in line when the automakers start repaying their creditors.
The government, said Jack Williams, a scholar in residence at the American Bankruptcy Institute and a business reorganization professor at Georgia State University, would be "a secured creditor with super-priority lien."
That, he said, "would put taxpayers in the best case possible."
Altman said that while such a plan would be an unprecedented move by the government. It would be more successful than the less-expensive $14 billion emergency loan package now under discussion. A Chapter 11 restructuring -- along with government DIP financing -- could help the automakers avoid liquidation and, in the long run, would result in fewer job cuts, Altman said.
The safety net of a bankruptcy, he said, could help the automakers ride out the worst of the recession.
"In two years' time, when they come out of the bankruptcy, there's a better chance that the economy is going to be in better shape and the credit markets will be flowing again to help the companies," he said.