Police in Northern California detain two 15-year-olds after an incident involving a self-driving Waymo, according to multiple reports. Authorities say the teens were riding in the vehicle when they behaved in ways that drew attention from police. One account describes the teens as drinking while in the car and firing water beads during the ride. Another report says the Waymo vehicle alerted or provided information to police that helped identify the passengers. The reports characterize the matter as an incident of alleged misconduct during a “joy ride” in the self-driving car. Details on charges, the teens’ locations during detention, and whether the vehicle’s systems recorded the conduct are not provided in the excerpts. The reports agree that police detain the two teens and attribute their identification to information connected to the Waymo and the vehicle’s response to the situation. The incident remains under police investigation, with the published accounts focusing on the detention and the alleged actions while riding the autonomous vehicle.