[Photo:  Driverless Car - by Grendelkhan (own work) / Wikimedia Commons]

Just hours after Uber proudly rolled out a fleet of sleek self-driving Volvos in San Francisco on Wednesday morning, one of them barreled through a red light. Now California officials have stopped the pilot.

All of Uber’s self-driving cars in both San Francisco and Pittsburgh, the first city to see Uber’s autonomous tech, do have an engineer at the wheel, so this could technically be classified as human error.

Notably, the car’s brake lights were on as it entered the intersection, indicating perhaps someone aboard the vehicle attempted to stop but did so too late. In a statement to The Huffington Post, Uber said the incident was a human mistake, not a technical one.

Somewhat ironically, the incident was captured by a dash cam mounted aboard a taxi in the next lane – i.e., the thing Uber’s technology aims to replace one day.