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Elon Musk has revealed a tiny submarine he says can be used to save the Thai boys currently stuck in a cave .
The same technology – which is shaped like a small rocket – could be used as an escape pod in emergency space evacuations, the billionaire has claimed.
Mr Musk has been trying to come up with solutions to try and save the children as the Thai government works to save them from being stuck underground.
Thailand schoolboys rescue - in picturesShow all 21 1 /21Thailand schoolboys rescue - in pictures Thailand schoolboys rescue - in pictures Police and military personnel use umbrellas to cover a stretcher near a helicopter and an ambulance at a military airport in Chiang Rai as rescue operations continue for those still trapped inside the cave in Khun Nam Nang Non Forest Park in the Mae Sai district. Four boys among the group of 13 trapped in a flooded Thai cave for more than a fortnight were rescued on July 8 after surviving a treacherous escape, raising hopes elite divers would also save the others soon.
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Thailand schoolboys rescue - in pictures Thai rescue team members walk inside the cave
Rex Features
Thailand schoolboys rescue - in pictures An ambulance exits from the Tham Luang cave area
AFP/Getty Images
Thailand schoolboys rescue - in pictures A military helicopter carrying rescued schoolboys approaches to land at a military airport in Chiang Rai
REUTERS
Thailand schoolboys rescue - in pictures Rescuers hands locked with a caption reading "We Thai and the international teams join forces to bring the young Wild Boars home" where 12 boys and their soccer coach have been trapped since June 23 in a cave in Mae Sai, Chiang Rai province, northern Thailand. The operation has begun to rescue 12 boys and their soccer coach who will need to dive out of the flooded Thai cave where they have been trapped for more than two weeks, with officials saying Sunday morning that "today is D-Day.
AP
Thailand schoolboys rescue - in pictures A Thai policeman stands guard at an entrance of the cave as rescue operations continue for 12 boys and their coach trapped at Tham Luang cave at Khun Nam Nang Non Forest Park in the Mae Sai district of Chiang Rai province on early July 8, 2018. Thai authorities told media on July 8 to leave a camp site near the cave where 12 boys and their coach have been trapped for more than two weeks so that "victims" could be helped, possibly signalling a long-awaited rescue effort to get them out.
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Thailand schoolboys rescue - in pictures Rescuers are seen drillining ahead of the operation at the Tham Luang cave complex, where 12 boys and their soccer coach are trapped, in the northern province of Chiang Rai, Thailand
REUTERS
Thailand schoolboys rescue - in pictures Rescuers are seen drillining ahead of the operation at the Tham Luang cave complex, where 12 boys and their soccer coach are trapped, in the northern province of Chiang Rai, Thailand
REUTERS
Thailand schoolboys rescue - in pictures Ruamkatanyu Foundation rescuers are seen drillining ahead of the operation at the Tham Luang cave complex, where 12 boys and their soccer coach are trapped, in the northern province of Chiang Rai, Thailand
REUTERS
Thailand schoolboys rescue - in pictures Thai policemen stand guard near a cave where 12 boys and their soccer coach have been trapped since June 23, in Mae Sai, Chiang Rai province, in northern Thailand Sunday, July 8, 2018. Thai authorities are racing to pump out water from the flooded cave before more rains are forecast to hit the northern region.
AP
Thailand schoolboys rescue - in pictures Journalists clear and prepare to leave the cave area during the 'D-Day' for the ongoing rescue operation for the child soccer team and their assistant coach to exit the cave at Tham Luang cave in Khun Nam Nang Non Forest Park, Chiang Rai province, Thailand, 08 July 2018. The officials' operations are underway to safely bring out the 13 members of the youth soccer team including their assistant coach who have been trapped in Tham Luang cave since 23 June 2018, out of the cave according to former Chiang Rai Governor Narongsak Osottanakorn said.
EPA
Thailand schoolboys rescue - in pictures Thai family members of missing football players and their coach (R) pass to meet with the officers during rescue operations to save a soccer team at Tham Luang cave in Khun Nam Nang Non Forest Park, Chiang Rai province, Thailand, 03 July 2018. According to Chiang Rai provincial Governor Narongsak Osatanakorn rescuers are taking supplies and food into the cave to sustain the team while there extraction is worked out.
EPA
Thailand schoolboys rescue - in pictures Rescuer walk out from cave where 12 boys and their soccer coach have been trapped since June 23, in Mae Sai, Chiang Rai province, in northern Thailand Sunday, July 8, 2018. Thai authorities are racing to pump out water from the flooded cave before more rains are forecast to hit the northern region.
AP
Thailand schoolboys rescue - in pictures Policeman line up on the main road leading to Tham Luang Nang Non cave on July 8, 2018 in Chiang Rai, Thailand. Divers began an effort to pull the 12 boys and their soccer coach on Sunday morning after they were found alive in the cave at northern Thailand. Videos released by the Thai Navy SEAL shows the boys, aged 11 to 16, and their 25-year-old coach are in good health in Tham Luang Nang Non cave and the challenge now will be to extract the party safely.
Getty Images
Thailand schoolboys rescue - in pictures Rescue workers along the main road leading to Tham Luang Nang Non cave as the first 2 ambulances carrying 2 boys pass by on July 8, 2018 in Chiang Rai, Thailand. Divers began an effort to pull the 12 boys and their soccer coach on Sunday morning after they were found alive in the cave at northern Thailand. Videos released by the Thai Navy SEAL shows the boys, aged 11 to 16, and their 25-year-old coach are in good health in Tham Luang Nang Non cave and the challenge now will be to extract the party safely.
Getty Images
Thailand schoolboys rescue - in pictures Thai medics and police officers evacuate the first two children with a helicopter after rescued from Tham Luang cave before heading to hospital, at a helicopter pad in Chiang Rai province, Thailand, 08 July 2018. Members of a children soccer team and their assistant coach who have been trapped in Tham Luang cave
EPA
Thailand schoolboys rescue - in pictures An ambulance transporting the children who have been rescued, arrives at hospital in Chiang Rai province, Thailand, 08 July 2018. The first six children have been confirmed to rescue on 08 July 2018 after have been trapped in Tham Luang cave since 23 June 2018. Four members of a children soccer team and their assistant coach who have been trapped in Tham Luang cave since 23 June 2018 have been rescued on 08 July 2018, according to former Chiang Rai Governor Narongsak Osottanakorn said.
EPA
Thailand schoolboys rescue - in pictures Ambulances transport boys rescued from Tham Luang Nang Non cave to hospital on July 8, 2018 in Chiang Rai, Thailand. Divers began an effort to pull the 12 boys and their soccer coach on Sunday morning after they were found alive in the cave at northern Thailand. Videos released by the Thai Navy SEAL shows the boys, aged 11 to 16, and their 25-year-old coach are in good health in Tham Luang Nang Non cave and the challenge now will be to extract the party safely.
Getty
Thailand schoolboys rescue - in pictures Medical staff await for the rescued Thai children at Chiang Rai Prachanukroh Hospital in Chiang Rai. The twelve missing Thai children and their adult coach went missing after entering a cave at Tham Luang, in Chian Rai Privince
Thailand schoolboys rescue - in pictures Ambulances transporting children after being rescue from Tham Luang cave, arrive Chiangrai Prachanukroh Hospital in Chiang Rai province, Thailand, 08 July 2018. Six children of a child soccer team have been rescued on 08 July 2018 after 12 of them and their assistant coach have been trapped in Tham Luang cave since 23 June 2018.
EPA
Thailand schoolboys rescue - in pictures Ambulances transporting children after being rescue from Tham Luang cave, arrive Chiangrai Prachanukroh Hospital in Chiang Rai province, Thailand, 08 July 2018. Six children of a child soccer team have been rescued on 08 July 2018 after 12 of them and their assistant coach have been trapped in Tham Luang cave since 23 June 2018.
EPA
Mr Musk had initially suggested that the boys could be rescued by inflating a giant tunnel through the caves that would displace the water and allow them simply to move through as if they were on land. He suggested on Twitter that the plan was still in place, but that it was probably not going to work.
"Also building an inflatable tube with airlocks," he wrote. "Less likely to work, given tricky contours, but great if it does."
He has now suggested that the tiny, "kid-sized submarine" could be used instead. The children would climb into the submarine and then be escorted out by divers, meaning that they would still be able to breathe and swim despite not being trained to use the equipment.
Musk posted videos on Twitter of the aluminium sub being tested at a swimming pool Sunday mid-afternoon California time. If the tests were successful, the sub was to be placed on a 17-hour flight to Thailand.
A spokesman for Musk's Boring Company tunnelling unit, which has four engineers at the cave, has said Thai officials requested the device, which could potentially help the children through narrow, flooded cave passageways. However, it is unclear if the device is part of any current rescue plans.
The official operation to rescue the boys from the cave is currently in its second stage. Four have already successfully been extracted from the cave, and their condition remains unknown.
President Donald Trump tweeted Sunday: "The U.S. is working very closely with the Government of Thailand to help get all of the children out of the cave and to safety. Very brave and talented people!"
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