AMD's shift into the lucrative AI chip market is helping it expand its margins, and driving its stock price higher.

Robo-taxi services are expanding thanks to AI computing. Tesla launched a robo-taxi service in Austin, Texas, on June 22. Alphabet’s Waymo completes more than 250,000 self-driving cab rides a week.

After years of missed promises, Tesla started a restricted trial with about a dozen of its Model Y SUVs in Austin, Texas, ...