"First, it was not technically a drone mission. While Domino's said GPS coordinates could potentially be used in future delivery flights, this inaugural mission was controlled by an experienced drone copter pilot who had the benefit of several cameras to help guide the flight.
Second, drone flights come with several restrictions in the U.S. For example, commercial drone flights are illegal in the U.S. until 2015. Even then, in most states, drones can fly up to around 400 feet but must have the permission of landowners before entering private property.
That could easily be handled by a one-click legal agreement with each online drone delivery order. But for now, the politics and science of drone food delivery remain complicated."
Not just complicated, risky. My buddy used to get his delivery car raided even though he locked the doors. The day will come when EM countermeasures are used to intercept the pizza drone!