Elon Musk’s Mini-Sub Was ‘Not Practical’ for Thai Cave, Chief of Rescue Says The tech billionaire sent 10 engineers to Thailand and designed a submersible vehicle using rocket parts, but it was not used in the narrow cave. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Cadbury Drops an Easter Reference, Entering a Culture WarAs Syria Crumbles, a Doctor PersistsTrump Faces Test as Boeing Announces Deal to Sell Jetliners to IranA Billionaire Property Magnate. Likes Twitter and Mar-a-Lago. He’s ... ChineseIHT Retrospective Blog: 1917: America Is at War With GermanySingapore Journal: Here Lies a Graveyard Where ‘East and West Came Together’