It’s been a difficult week for Tesla. Not long after Elon Musk and President Donald Trump’s very-public social media spat led Tesla shares to take their greatest single-day drop ever on Thursday—erasing $152 billion off its market cap—one of Tesla’s top engineers confirmed on social media late Friday afternoon that he was leaving the company.
Milan Kovac, who oversaw the development of Tesla’s “Optimus” humanoid robot posted on X that he had made “the most difficult decision of my life” and would be “moving out of my position,” confirming a Bloomberg report from earlier Friday afternoon that he was departing the company.
“I’ve been far away from home for too long, and will need to spend more time with family abroad,” he wrote in the post. “I want to make it clear that this is the only reason, and has absolutely nothing to do with anything else. My support for [Elon Musk] and the team is ironclad—Tesla team forever.”
Musk later replied to the post on X, thanking Kovac for his contributions to the company and saying it had been an “honor” to work with him.
The departure is a meaningful one for Tesla. Musk has repeatedly made public statements staking the future of the company on Tesla’s self-driving software and its yet-to-be-released humanoid robot product. Musk has claimed that the Optimus robot, specifically, could generate “north of $10 trillion in revenue” for Tesla and be its biggest product ever. It’s largely his bullishness on these AI-powered initiatives that have contributed to Tesla’s soaring stock price, which some analysts have argued is divorced from reality.
Kovac’s departure raises questions over the future direction of Optimus, and whether Tesla will successfully be able to develop, manufacture, and deliver the humanoid robots. Bloomberg reported that Ashok Elluswamy, who leads Tesla’s Autopilot, would be taking over responsibilities for Optimus. Tesla had already been criticized for overselling the capabilities of Optimus after it failed to alert attendees of its “We, Robot” launch event that humans were apparently remotely controlling the robots. (Kovac had confirmed in a social media post after the event that the robots were human-assisted “to some extent”)
The departure of one of Tesla’s top engineers adds to what has already been a troubling week for the electric vehicle maker. Tesla’s shares tumbled this week as President Trump and Musk took to their respective social media platforms to hurl insults at one another. Trump accused Musk of being frustrated that EV credits for Tesla cars would go away as part of the “Big Beautiful Bill,” while Musk accused the president of irresponsible spending with the proposed legislation. The conversation spiraled into insults and even discussions of cutting SpaceX contracts with NASA as the partnership between the two figures very publicly imploded.
