It took less than a day for California to crack down on Uber's self-driving cars

Those self-driving Uber cars that started picking up passengers Wednesday morning in the company's hometown of San Francisco have already been ordered to pull over — less than a day into the pilot program.

State regulators cracked down on the ride-hailing company's autonomous vehicle program that was knowingly operating without a permit. Uber hadn't registered for the Autonomous Vehicle Tester Program when the cars started driving this morning.

The California Department of Motor Vehicles later Wednesday sent a letter to Uber's Anthony Levandowski asking the company to cease operations immediately or face legal action. Read more...