Ehhhhh...I haven't heard such a thing, but if Toyota has sold the manufacturing rights to GM, it certainly is nearing the end of the world.
I have an '87 Corolla..one of the first vehicles built at the NUMMI plant, where the Nova was first produced. Like you said, it was a joint venture between Toyota and General Motors, but Toyota came in a saved GM's *** because the facilities were in such horrid conditions.
There may be some confusion...GM has its own versions of the Matrix...namely the Pontiac Vibe. But I have a hard time believing Toyota sold the building rights to GM.
