By now, the world is well aware of the rescue situation of the Thailand boys soccer team who were trapped in a cave with rising flood waters.

Everyone is also probably aware that after the public reached out to him for his help, Elon Musk got his team on creating a “miniature submarine,” built with the intention of saving the children from the cave much faster. Now we’re getting a look at how that device works, which ended not being used because according to rescue chief Narongsak Osatanakorn, “the equipment they brought to help us is not practical with our mission.” Check out the results below. As you know, the entire team and their coach were rescued and are doing ok now.