This is a long term thing, but I will be watching it constantly with short term interest:
My play on MBLY-TSLA (Mobile Eye & Tesla) is that I believe the same thing that George Hotz said about MBLY's ability to do its job for TSLA.
We Are Coming for You, Tesla, And You, Too, Google, Says Hacker Hotz
What this means to me is that the MobileEye-Tesla partnership will continue to thrive in business, installations, manufacturing, sales, and stocks, until the day that it doesn't, when they realize, oh, damn, that twerp dude was right, and then it will go puff. So I'll just put stock in that partnership in a VERY tepid way (because that's the current "business dealings" the stock will track) and be ready to pull out at a dust mite's notice anything related to that partnership.
The good news is that even if I'm right (that Hotz is right), the fix is easy: hire Hotz and put his work to work. Hotz already found out Musk is a PITA to do business dealings with. As others have said, this is just a negotiating strategy: Musk practically tried to steal Hotz' value from him. Instead, he'll have to pay top dollar. But if it demonstrates properly, it will be worth it. I'd hate to be the fly on the wall of those conversations, but eventually something will work. Best case scenereo (wrt $TSLA stock price): I'm completely wrong.