A group of San Franciscans is protesting the expansion of Waymo and Cruise robotaxis by disabling the vehicles with traffic cones.

The “Week of Cone,” as the group is calling the now-viral prank on Twitter and TikTok, is a form of protest against the spread of robotaxi services in the city, and it appears to be gaining traction with residents who are sick of the vehicles malfunctioning and blocking traffic. The protest comes in the lead-up to a hearing that will likely see Waymo and Cruise expand their robotaxi services in San Francisco.