It was around 10 pm on a Sunday evening in March. Elaine Herzberg was walking her bike across N. Mill Avenue in Tempe, AZ, when a Volvo XC90 SUV traveling 40 mph struck and killed her. Tragically, about 6,000 pedestrians a year become traffic fatalities. Herzberg’s death, however, was different. She was the first pedestrian killed by a self-driving car.