https://www.cnbc.com/2018/07/10/elon-musk-takes-submarine-to-thailands-tham-luang--cave.html > Elon Musk has visited the location where a group of Thai boys and their soccer coach are trapped in a cave, according to a post on his Twitter account. > The Tesla CEO tweeted late Monday that he had “just returned from Cave 3,” likely in reference to Chamber Three, the rescue command center.