No humans will be allowed in the cars, not even passengers overseeing the progress and available for emergency purposes. Instead, teams of support personnel, PR people, and potential service vehicles will travel along with the Tesla, Waymo, and Cruise self-driving cars. Each company will have 3 opportunities to “save” their vehicles if they get stranded/stuck. For example, if one of them ended up going in a loop in a roundabout, unable to exit, the parent company could use one of their 3 saves to help the vehicle exit. After 3 saves, if the car cannot complete the race, then it automatically loses/forfeits.