A San Francisco business owner who says he was once one of Waymo's strongest supporters is now calling for changes to the company's emergency response policies after alleging he was trapped inside one of its autonomous vehicles while it was being vandalized. Sherman Watson says he also wants access to surveillance footage from the vehicle, arguing it could help him process and document what happened during the incident. Watch NBC Bay Area News free wherever you are Watson, who frequently posted videos of his driverless rides on social media, said he had long been an advocate for the technology. "One thing about Waymo is there's no driver, which in certain cases is great because a lot of people don't like to talk to drivers, or they feel uncomfortable," Watson said. According to Watson, that perspective changed during an early Saturday morning ride in May after he spent the evening with friends in San Francisco's Marina District. Watson alleges the Waymo vehicle stopped at the intersection of Pierce and Lombard Street, where he saw two young men approach the robocar and jerked its front bumper. Local "The smashing began right away. And they were doing it in tandem. So, one would come up, the other would go grab something. They put this like weird foam thing on top of the hood and then they climbed up,” he said. "And at that point I froze, you know, I just panicked, I froze so I called 911 and Waymo came on," Watson said. Watson alleges that while he was inside the vehicle, someone from Waymo spoke to him through the car's overhead communication system. "The only thing they said is 'we realized there's a problem with the vehicle.' I said, 'Yes, someone's trying to kill me.'" Watson said he repeatedly asked the company