Musk, who also runs SpaceX and a number of other companies, has been known to make big often exaggerated promises. For example, he once called the Hyperloop, which was never built, the "fifth mode of transport" and famously promised to take Tesla private in a Twitter post, saying he had secured financing that he didn't have.

CEO Elon Musk wants to close down tax loopholes as part of his wide-ranging remit at the Department of Government Efficiency, but

In the history of modern states, no person has been able to convert their wealth into such global political influence. By buying Twitter, now rebadged X, Elon Musk has already hoisted himself into the US government.