The spokesperson said:

"Today is Jim Keller's last day at Tesla, where he has overseen low-voltage hardware, Autopilot software and infotainment. Prior to joining Tesla, Jim's core passion was microprocessor engineering and he's now joining a company where he'll be able to once again focus on this exclusively. We appreciate his contributions to Tesla and wish him the best."

Tesla has been in hot water for quite some time and is still facing intense scrutiny over the safety of its self-driving technology. Back in March, a Model X was involved in a fatal crash while Autopilot was on, though Tesla insists that the driver was at fault for the accident. While Keller left during a difficult time, Tesla has no shortage of talents to choose from. In fact, he's being replaced by two tech veterans.

Pete Bannon, another Apple alum who co-led the development of Cupertino's chips from A5 to A9, will lead Tesla's Autopilot hardware efforts. The company has also promoted Andrej Karpathy, the Director of AI and Autopilot Vision, and put him in charge of Autopilot's software development.

Update 4/26/18 1:38PM ET: Intel has confirmed Keller's new position there as senior vice president to oversee silicon engineering. This includes system-on-a-chip (SoC) development.