San Francisco saw its first traffic accident involving an autonomous car earlier this month. It occurred on the afternoon of Jan. 8 when a Nissan Leaf autonomous vehicle operated by Cruise Automation hit a parked Toyota Prius. The car was in manual control mode at the time, but an account of the incident says it started when the automation computer steered the car incorrectly. "The vehicle began moving in its lane to the left, then began correcting to the right at which point the drive decided the take over manual control," the company said in a report to the California Department of Motor Vehicles. "After taking over manual control, the operator did not change the path of the vehicle and it collided with an unoccupied Toyota Prius."