I don't think it was stolen, I think AMC made arrangements for it to disappear and never be seen again.
Seriously though, I don't know
what they were thinking with that one. "Let's chop the a$$ end off an AMX, slap on an American bumper and taillights, and see what we end up with." Yes, it was a similar philosophy that gave us the Gremlin, but at least the Gremlin looked good and wasn't a misshapen afterthought.
On the bright side, if this car
did surface, it would sure be easy to identify.