GM's plan should be openly clear that long-term viability should include ingesting Chrysler, absorbing the nutrients, and pooping out the waste.
Long-term viability for the Detroit 3 includes not having too many competitive vehicles between themselves (much less within themselves).
Not to worry about anti-trust - there's enough volume and steadiness in the transplants that a merger-a-trois would not constitute a monopoly. A "Detroit 1" would make it tough for the UAW to decide who to strike against first come negotiation time.
