US safety regulators contacted Tesla after its self-driving cars stopped abruptly, sped or swerved into the wrong lane as the company began limited robotaxi service, US officials said Tuesday. The National Highway Traffic Safety Administration (NHTSA) said it is following up on videos posted online of Sunday's launch in Texas

Tesla Inc. shares climbed after the automaker rolled out its long-promised driverless taxi service to a handful of riders, a modest debut for what Elon Musk sees as a transformative new business line.

It wasn’t walking away from autonomy," GM Chief Financial Officer Paul Jacobson said last week. "It was walking away from the robotaxi side of it.”