Sources: Reuters, FAA Request [PDF]
quote: I wonder what kind of fuel efficiency these drones have compared to the trunks that move packages around.
quote: yet when something flying has an accident it is major event because of its greater effect psychologically even though next to truck accidents they are statistically insignificant.
quote: drive in pre-determined path ways;
quote: have a driver that can judge and react to situations;
quote: Just imagine the family dog coming to "greet" the UAV