Yeah, I honestly don't have a sense in which direction the stock would go with such an announcement.
I am not even sure it would move much in either direction. Some traders would think it's good, some bad. Everyone's bets would cancel each other out and the delta in either direction would be small.
My guess is it would trend downward since my evaluation of $tsla is that it is a personality driven bubble; but my evaluation isn't everyone else's.
Cuz, TSLA is MUSK. WIthout him, the company has batteries on wheels.