It was clear from the beginning that Elon concocted a game. He asks some fanboi to tweet him first about helping on the mission so he can start the game rolling. I suspect the submarine he sent doesn't work and the video he put up on how it was working in the pool was another of his fake videos, like the fake self driving car demo video posted 2 years ago. If it really worked, why didn't he go to some local pond and try it out? A pool water is very different from muddy cave water. The video he made is only good for Tesla shareholder letter and his twitter followers. This is why he shows up with the submarine AFTER the last rescue operation was already underway, so there is no chance of trying it out. He was told not to bring his sub, but he still went ahead and littered the Thai beach with that sub. Now a real expert involved in the rescue mission has come out in the open on what he thinks about the submarine: He can stick it where it hurts. .. Absolutely no chance that sub would have worked. Just a PR stunt. (Just like the one in Puerto Rico where Elon brought back power to millions of people in a week. /sarcasm) https://www.facebook.com/video.php?v=10156536673899641 What a disgusting behavior to promote his powerwall sales and Tesla brand, exploiting human catastrophes in the most obvious and blatant manner. Powerwall operated pumps? ROTFLOL! Get outta here!