Kroger announced that it has started using unmanned vehicles for online grocery deliveries. The services was launched at a Fry’s Food Store in Scottsdale, AZ. It follows a successful pilot with Nuro, a California-based robotics and artificial intelligence specialist.

To use the service, customers shop for their groceries at or via their mobile app, and place their order according to available time slots. The orders can be delivered that day or the next day, and are brought to customers’ homes by the Nuro R1 vehicle or by self-driving Prius cars. There is a $5.95 delivery fee and no minimum order.