I think the lack of competition to the foreign companies will raises prices for all remaining cars, which will significantly hurt the economy.
And I think there are a lot of companies who will be affected that people don't even think of. Freight/trucking companies... Companies with fleet vehicles that have to adapt to new vehicles other then crown victorias, etc... For instance, replacing police cars with other make/model cars may require purchasing new equipment that may have been reused previously... lightbars, etc... Plus what car that doesn't come from the big 3 would even make a suitable police car? ford crown vics now, chevy caprices last decade, and dodge's previously are the standard... A police car is really best if it is a beefy, solid automobile. Body on frame construction, heavy weight, etc. A simple collision that may just require a new bumper, fender, and hood on a crown vic could fuck up the unibody, fender, bumper, hood, crumple zones, etc on a unibody car. Modern cars like that are designed to sacrifice the car rather easily in order to protect the driver. With a crown vic, a cop can pit another vehicle, etc with very little damage to their own car.
That being said, I do believe the big 3 should file chapter 11, drop UAW, and streamline their business... It will be good for everyone. The union needs to accept the fact that their members HAVING a job, WITH benefits, even if the job doesn't pay as much, doesn't have as good of benefits... is better than NOT having a job. Which is what will happen if the companies go out of business.