Tesla and SpaceX CEO Elon Musk.Patrick Pleul/picture alliance via Getty Images.
The Russian billionaire Andrey Menichenko's superyacht.Enrico Spanu/REDA&CO/Universal Images Group via Getty Images.
Roman Abramovich, owner of Chelsea FC, next to his superyacht called EclipseAlexander Hassenstein - UEFA/UEFA/Ali Balli/Anadolu Agency/Getty Images.