Billionaire Elon Musk has worked behind the scenes on an initiative aimed at depleting the civil service, prompting questions about its legality.

An email sent to federal employees offering a 'deferred resignation' echoes a 2022 memo Musk sent to Twitter employees telling them they 'need to be extremely hardcore.'

Echoing Elon Musk's approach to thinning out Twitter's staff in 2022, Donald Trump's plan to significantly slash the government workforce now, for a limited time only, includes offering resignation buyouts.

Boeing has lost more than $2 billion producing the Next Air Force One after President Donald Trump renegotiated the deal in his first term.

Elon Musk used his new government efficiency role to stop by the operations of his competitor Boeing to look into the long-delayed efforts to renovate two 747 jets into the next generation of Air Force One jets,

Then along comes Musk, with one of the world's loudest microphones, shouting that NASA's astronauts are stranded and that President Trump wants them saved. It's a bombshell thing for the founder of SpaceX, who has become a close adviser to Trump, to say publicly.

A quick look at Elon Musk’s social media pages makes it clear that he’s more focused on his work in Washington D.C. than anything involving electric vehicles (EVs) or rockets. 💰💸 Don’t miss the move: SIGN UP for TheStreet’s FREE Daily newsletter 💰💸 Even as Tesla TSLA prepares to report its Q4 earnings and full-year guidance after market close Wednesday,

Elon Musk said Tesla will begin launching unsupervised self-driving models in Austin, Texas by June and several other U.S. cities by the end of 2025.

It’s hard to fault a CEO who grows a company beyond $1 trillion in value. Elon Musk managed the feat by upending the automotive market with Tesla’s electric vehicles and extended its lead with broader battery power.