Rivian’s AI pivot is about more than chasing Tesla

RJ Scaringe is sitting in Rivian's Palo Alto offices, explaining why the adventure-themed EV company suddenly decided to build its own self-driving cars, when an unexpected guest glides by the window outside: Waymo.

A robotaxi from the Alphabet-owned company pulls up outside the office. The passenger, an analyst from Goldman Sachs, briefly takes a selfie before climbing inside. The Rivian founder and CEO chuckles at the scene.

"That's amazing," he laughs. "So perfect."

The...