Elon Musk has slept on Tesla's factory floor and instructed SpaceX employees to walk out of meetings where they aren't adding value.

It may be tough to single out any particular ones as the worst of the bunch, but allow me to suggest two contenders: tech entrepreneurs Elon Musk and Vivek Ramaswamy, who have been tapped as co-chairs of a proposed new “Department of Government Efficiency,

The world's wealthiest man is the CEO of Tesla and SpaceX, and he has several other roles across his many companies.

Elon Musk's super PAC spent around $200 million to help elect Donald Trump, according to a person familiar with the group's spending, funding an effort that set a new standard for how billionaires can influence elections.

Tesla’s stock is headed for its best four-day stretch in more than four years, following Donald Trump’s election win.

Elon Musk, the world’s richest person, will be taking on an official role to try to help President-elect Donald Trump make government more efficient. It will add yet another responsibility to an ever-growing to-do list for the increasingly distracted CEO and business leader.

MSNBC’s Lawrence O’Donnell explains why Elon Musk will be the first person kicked out of the Trump administration when the position Musk and his Trump assigned partner, Vivek Ramaswamy, were given does not exist and will end in 18 months.

U.S. President-elect Donald Trump on Tuesday named Elon Musk and former Republican presidential candidate Vivek Ramaswamy to lead a newly created Department of Government Efficiency, rewarding two of Trump's well known supporters from the private sector.

President-elect Donald Trump on Tuesday night announced Elon Musk will help lead an effort to cut government regulations and slash spending, making good on a campaign pledge to put the Texas billionaire who spent $119 million to get him elected in charge of the so-called “Department of Government Efficiency.