This is not a con-law forum but you need to read the clause. Congress absolutely can regulate if it chooses (which the manufacturers have indicated they want it to do). Not applicable to Olds since GM never asked for the regulation. It is a last resort but we have come to that. They must seriously shrink the dealer count if they are to survive.
Lithia is heavy Chrysler...then GM. If GM discontinued some brands, it wouldn't be a lot of additional impact on Lithia....they have bigger fish to fry.
...and, GM would not have to buy out any dealers to discontinue a couple of their brands. There will be some major restructuring in the domestic auto industry. Probably about 3-4K less dealers when all is said and done.
Part of any bailout will be legislation voiding the states franchise control over car dealerships. This will pave the way for getting rid of the dealerships. The buyouts will be much cheaper than for Olds.