Waymo robotaxi detects threat, alerts police who arrest juveniles with ghost gun

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A Waymo autonomous vehicle pulled over and contacted law enforcement after detecting a potential safety threat from its passengers in California. Police responded and arrested juvenile riders following the discovery of a ghost gun — an untraceable, privately made firearm — inside the vehicle. The incident occurred in September 2025, highlighting the safety protocols built into Waymo's driverless taxi service. The case draws attention to how autonomous vehicles are increasingly equipped to respond to in-cabin security situations without a human driver present.

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