Tonight there is a new and high flying dream, using drones to deliver packages, not in a day but in minutes. We wonder what happens when a drone tries to leave a package on your doorstep. Abc's senior... See More
Tonight there is a new and high flying dream, using drones to deliver packages, not in a day but in minutes. We wonder what happens when a drone tries to leave a package on your doorstep. Abc's senior in the correspondent jim avila. Reporter: It started as a promotional joke, a mom and pop dry cleaners outside philadelphia promising to flap your suit home in the wind, via drone. Moved to the big time with dominos pizza posting another tongue in cheek offer. But jeff bezos, visionary amazon founder, doesn't seem to be joking. It's going to be a lot of fun. Reporter: Telling 60 minutes he's delivering a new system, using drones with into pilot in the plane or on the ground. Totally gps. We can do half-hour delivery and we can carry objects, we think, up to five pounds, which covers 86% of the items that we deliver. Reporter: Not so fast. The faa reminded everyone today gps drones are "not currently allowed in the united states." And restrictions are so tight, because we're a buzz we couldn't fly one outside. This indoor delivery when from the newsroom to my office. The concern is understandable . With all those brand names up in the air perhaps as early as 2015 shooting real estate, making deliveries, policing cities and watching the border. It could be chaos in the skies. Case in point, this unauthorized drone flight over new york city skyscrapers stayed up for less than three minutes before crunching into the city sidewalk. These drones fly only 20 to 45 minutes. Gps can get blocked in urban areas. Its hard for drones to avoid moving objects like cars or people on landing, and they are difficult for other aircraft to see. At purdue university today, they are developing just the kind of drones that would fit the amazon scenario. We've crashed the first three times we took off. Reporter: Sometimes its as simple as drifting off course which could mean your gift delivery goes to your neighbor's house. Even then who is going to ring the doorbell? Jim avila, abc news, washington.
This transcript has been automatically generated and may not be 100% accurate.