@hawkeye10,
I don't see the risk of backruptcy as being that people won't buy their cars, I see it as being a ripple effect down the line of creditors which would be like a cancer in the middle of an already shaky economy.
A bailout on the other hand doesn't buy you a solution, it only buys you time.
The best way for government to use its money is to induce "Market Pull" instead of "Industry Push".
For example, if government subsidized the cost of producing Wind Turbines, or BioAlgae Farms (to name just a few) and gave 50% of the production contracts to Ford/GM (with the other 50% going to other private firms to induce competition) with the stipulation that 80% of their productivity within 4 years should be turbines, then maybe creditors would lend Ford/GM money because they knew they would make the money back over time.
The award of the contracts after 4 years time could be given to the company (or companies) which produced the product with the most cost efficiency. This would force the Big 3 to be competitive, and if they weren't then there would already be a more competitive industry sitting beside them ready to take over and buffer the loss if they ultimately fail.