Musk told Stanton that he had "one of the world's best engineering teams who normally design spaceships and spacesuits working on this thing 24 hours a day."[1]

Musk told Stanton that he had "one of the world's best engineering teams who normally design spaceships and spacesuits working on this thing 24 hours a day."[1] [1]https://www.businessinsider.com/elon-musk-reveals-email-thread-explaining-why-he-built-mini-submarine-2018-7 https://www.businessinsider.com/elon-musk-reveals-email-thre... That took all of 1 minute on Google...