Chester, as far as the future of MMC is concerned, I see that as questionable as you do. I had suggested in another thread that an endorsement from BMW would probably have been better than from an investor whose intentions you can't see through.
But I'm not worried about spare parts for the older cars. There will be enough alternatives from third parties. And the financial value of my 4/4 is absolutely irrelevant to me. It is my car.