Money Tesla’s Elon Musk: ‘Cryptocurrency is promising, but please invest with caution!’ May 7, 2021Nathan Bomey, USA TODAYComments Off on Tesla’s Elon Musk: ‘Cryptocurrency is promising, but please invest with caution!’ Elon Musk, CEO of Tesla and SpaceX, likes cryptocurrency, such as bitcoin and dogecoin. But he's urging investors to proceed "with caution."