A local delivery service in Washington DC is using a fleet of robots to deliver food orders. The cooler-sized machines roaming the sidewalks wait for orders to be placed.
Customers go online or use the company's application to order a meal. The robot then heads for the restaurant, using an array of sensors and cameras to navigate the sidewalk.
The system creates a digital map to remember trouble spots. It can even read electronic signs at pedestrian crossings.
The company behind the six-wheeled machine says it requires to negotiate with individual city governments to get permission for the robots to use the sidewalk in different cities.