While the FAA recently grounded Amazon's plans to make deliveries by drones, Dodo Pizza in Syktyvkar, Russia, has done it.
On June 21, 2014, Dodo Pizza delivered six pizzas in 1.5 hours -- the first commercial pizza delivery by drone.
Here's how it works: A Dodo Pizza salesperson takes orders on a tablet in a park -- cash and credit accepted. The tablet transmits orders to a tablet in the restaurant's kitchen. A few minutes later, the pizza box is loaded onto a CopterExpress drone and flown to the park, where it lowers the pizza to the customer with a cable. The customer gets his or her pizza and everyone gets a show.
Currently, the delivery location is limited because the routes and flights must be pre-approved by authorities.