Ground-based Delivery Drones; or, "who needs to fly when you have a sidewalk!?"
Small, 6-wheeled robots can deliver small-to-medium packages.
"The robot uses GPS, sensors and cameras to travel on sidewalks at the same pace as a person and can make it up and down curbs and small stairs. It will stop when there is an obstacle or pedestrian in its path. If someone tries to mess with the robot, a human operator at a central control center can scare the thief away via a speaker and call the police. The robot has a microphone on it for two-way communication.
The engineers also said they put a lot of effort into making the robot "cute" so pedestrians would accept it. "
It was only in the decades After the Crash that corporations and individuals started mounting small weapons and armor on their 'cute' rolling drones... --Not From Article.
(Poster's Note: the cnbc link has a loud audio ad that plays when going to the link, sorry about the ads/noise!)