https://techcrunch.com/2018/07/10/musks-mini-sub-not-practical-for-thai-cave-boys-rescue/

Billionaire SpaceX founder Elon Musk tweeted at the weekend to say he was working with cave experts to build a mini submarine out of rocket parts that he thought could help a rescue effort to free 12 boys and their soccer coach trapped for weeks in a flooded underground cave complex in Thailand.

In the last few minutes, it’s just been confirmed that an eleventh boy has been brought out of the cave complex by the divers. However Musk’s unasked for experimental ‘escape pod’ device has not been involved in the rescue mission — after being deemed impractical for conditions in the caves.