Critics have been calling for the death of Tesla since their inception. You've got to look at what that organization has accomplished against all odds. I could see a potential acquisition but it won't be from an existing automotive company. Several tech titans want in on this market, but the deal has to make sense.
I would not be surprised to see a Chinese enterprise acquire them but I don't know the legal ramifications of that, especially with the current trade war.
But the fact of the matter is I only see Tesla getting bigger by the day; There is no other OEM on the planet that is improving their products as fast as they are. It's incredible. And it's not just the car business that's getting bigger by the day either. Look at what their mission is and how successful they've been on executing it.