Elon Musk said he asked "Little X," his oldest child with the singer Grimes, to punch him in the face. "And he did," Musk said.

U.S. President Donald Trump said on Friday that billionaire Elon Musk will remain a close adviser, after the Tesla CEO ended a chaotic four-month stint leading the administration's sweeping cost-cutting campaign.

It is a wrap for Elon Musk as a member of the Trump administration. Overnight, Musk's role as a special government employee has come "to an end."

Elon Musk is leaving Washington after a short but turbulent stint in government and getting back to his numerous businesses, each with their own set of issues for the billionaire to address.

Tesla's robotaxi launch could pose a challenge to Uber's progress in the autonomous ride-sharing market, according to analysts.

The New York Times' report details how Elon Musk's private life changed after he joined the campaign trail for President Donald Trump, including alleged drug usage and family drama. The father of 14 allegedly said that he fathered a child with a Japanese pop star and that he would give his sperm to anyone to have a baby.

Elon Musk's break with the Trump administration means investors will hope he refocuses on his sprawling empire as Tesla battles slumping sales and after SpaceX's latest rocket launch fell short of expectations.