Marcario joined the board in 2021, and will maintain her position as chair overseeing the Rivian Foundation, which made its first grants last year.

The decision brings to a close a years-long court battle that irked Musk so much he moved Tesla's incorporation from Delaware to Texas.

The driver assistance software is available on Rivian's for Gen 2 R1 cars and works on 3.5 million miles of North American roads. But it doesn't slow or stop for traffic lights or stop signs.

Isaacman will run the space agency at a time when Trump is trying to both downsize it and task it with returning astronauts to the moon.