In March 2018, a driverless car struck and killed a woman crossing the street in Tempe, Arizona, making it the world's first pedestrian fatality from a car that was being driven by AI. But there was also a human operator behind the wheel, monitoring the vehicle, and a decision had to be made who was responsible, the human, or the AI? In her first TV interview, operator Rafaella Vasquez tells the story of the crash and its aftermath, while Hannah also talks to the lead detective on the case. She also tracks down a whistleblower from Uber, the company behind the driverless vehicle, and takes her first rides in autonomous vehicles in the US and UK