Waymo's self-driving cars in San Francisco are showing a noticeable shift in behavior, moving from their historically cautious approach to a more aggressive driving style. In September, a witness observed two Waymo vehicles navigating a two-lane tunnel, switching lanes simultaneously in a manner reminiscent of New York taxi drivers. This change is sparking conversations about the evolving capabilities of autonomous vehicles and their adaptation to urban driving challenges. Sophia Yen, a startup founder who experienced the incident first-hand, expressed her surprise at the Waymos' lane-switching behavior. Previously, these vehicles were characterized by their careful driving, which often frustrated human drivers. The shift towards a more assertive style mirrors the nuances of human driving, raising questions about safety and the effectiveness of these self-driving technologies in complex urban environments. As Waymo continues to test and refine its autonomous systems, this change could impact public perception and acceptance of self-driving cars. The blending of human-like driving traits with autonomous technology may influence regulatory discussions and further development in the field. Observers will likely keep a close eye on how these vehicles adapt to traffic dynamics and what that means for the future of urban transportation.