Elon Musk — the world’s richest man — has built several companies, including PayPal, Tesla, and SpaceX. He’s also built a close relationship with Donald Trump, president-elect of the United States. America’s next leader has appointed Musk to run the newly created Department of Government Efficiency, which is meant to slash government waste.

Nathalie Jimenez, a BBC reporter in New York, explains how Musk built his business empire and why he may have aligned with the Trump administration. She also discusses Musk’s personality traits and how they influence how he leads.

And Lily Jamali, the BBC’s North America Technology Correspondent, explains the ways Musk does and does not reflect “tech bro” stereotypes.

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