Self-driving cars are everywhere in San Francisco. An anonymous group is surreptitiously placing orange traffic cones on the driverless cars, confusing their sensors and rendering them inoperable.

Self-driving cars are everywhere in San Francisco. Some opponents are fighting back by using traffic cones to disable the robo-taxis. Driverless cars now roam San Francisco any time of day or night, ...

Two people dressed in dark colors and wearing masks dart into a busy street on a hill in San Francisco. One of them hauls a big orange traffic cone. They sprint toward a driverless car and quickly set ...

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