Starting today, residents and businesses in Redwood City, Calif., and Washington, D.C., can get food delivered right to their doors — via robot. Starship Technologies, an Estonia-based startup created by two Skype co-founders, Ahti Heinla and Janus Friis, will put its autonomous ground-delivery robots to work delivering food with Postmates in Washington, D.C., and DoorDash in Redwood City, Calif. The six-wheeled robots are a little under two feet tall, weigh about 40 pounds empty and travel four miles per hour — walking speed. The idea is that one day soon these autonomous rovers will share sidewalk space with pedestrians on their own, but for now they’ll be accompanied by handlers — people walking alongside each robot as it makes its deliveries. The handlers will take notes on how well Starship’s robots perform and intervene if something goes wrong.
you will always need a "handler" because there will always be people who will hi-jack the food.
So, if you're paying the "handler" to be a chaparone, why not let him just deliver the food, collect some tips, and keep America Working??????? Scrap the r2D2. Another Dumb idea , just because it can be done.