A routine patrol in San Bruno, California, took an unexpected turn when a Waymo car made an illegal U-turn—without anyone behind the wheel. This startling encounter exemplifies the new wave of legal and logistical challenges that autonomous vehicles present to local law enforcement and lawmakers alike.

Police in Northern California found themselves in an unusual predicament when they pulled over a driverless Waymo taxi after it executed an illegal U-turn. Despite the violation, no citation could be issued, highlighting new challenges in regulating autonomous vehicles.