Amazon announced that it is working on a similar plan to deliver you certain, smaller items in a half hour or less. Just like pizza!

That's what the company told a House Oversight Committee on Wednesday, when it mentioned its idea of delivering items to people's doorsteps using drones.

Now, don't get too excited – the prospect of using commercial drones to deliver packages is probably years away. But it's never too early to start thinking about the implications.

Missy Cummings, director of Duke University's Humans and Autonomy Laboratory, teaches about drone technology. She explained more about the logistics and economics of how a system could work.