Another story develops in the drama of the Thai football team trapped in a cave as Elon Musk chips in the efforts to rescue the children.

While an international coalition is underway to rescue the football team, the 'Wild Boars,' from the cave, Musk comes up with a solution. He had his company design a 'kid-sized' mini-sub with the hopes that it will be useful for the rescue operations, which has seen 8 of the 12 boys rescued so far. Musk has been very vocal about his decision to help, tweeting that he sent people from his company SpaceX as well as supplies like Tesla Powerwall batteries and water pumps, USA Today says.

Even as Elon Musk tweeted his support in the form of supplies and the mini-sub, ongoing rescue efforts have borne much fruit. Of the 12 kids trapped in the Tham Luang Nang Non cave, 9 has been rescued, according to the Evening Standard UK.

There are still three remaining members of the team, as well as their coach, trapped in the cave. Rescue efforts have been difficult; the narrow space makes it difficult for the divers and rescue teams. Add to that the complication of rescuing the football team, all of which don't know how to swim. A team of two divers is assigned to a boy. The boy wears a full-face oxygen mask with air supplied by a third compressed air bottle.

The boys are reportedly in high spirits despite being left in isolation upon rescue to protect them from infection. Despite this, the boys are reportedly in 'high spirits' upon rescue.

Elon Musk's technology, CNET reports, is welcomed by the rescue team. However, mission head Narongsak Osotthanakorn has been quoted as saying that Musk's technology is 'technologically sophisticated' but, as for its use in the rescue, was not 'practical.'

Musk's mini-sub 'Wild Boar,' which he dubbed after the football team, is composed of a repurposed tube from a SpaceX Falcon rocket. It was made light enough to be carried by the divers in the mission, and small enough to pass through the cave's narrow passageways. It is also designed to carry four oxygen tanks.

Despite the initial rejection, Musk says that the sub will remain in Thailand to be used 'in future situations.'