Initially, they did [1]. "Uber moved from two employees in every car to one. The paired employees had been splitting duties — one ready to take over if the aut

Initially, they did [1]. "Uber moved from two employees in every car to one. The paired employees had been splitting duties — one ready to take over if the autonomous system failed, and another to keep an eye on what the computers were detecting. The second person was responsible for keeping track of system performance as well as labeling data on a laptop computer. Mr. Kallman, the Uber spokesman, said the second person was in the car for purely data related tasks, not safety." [1] https://www.nytimes.com/2018/03/23/technology/uber-self-driving-cars-arizona.html https://www.nytimes.com/2018/03/23/technology/uber-self-driv...