Google X announced they are also working on flying delivery drones, just like their friends at Amazon and Domino's Pizza.
Google announced this on Google+ saying:
Introducing Project Wing from Google[x], a new approach to delivery using self-flying vehicles.
It not only can deliver physical goods but maybe in the future, search results!
Here is their video:
Here is the Amazon Prime Air video:
Here is the Domino's DomiCopter video:
Forum discussion at WebmasterWorld.