Google Building Fleet of Delivery Drones

Google's secretive research laboratory is trying to build a fleet of drones designed to bypass earthbound traffic so packages can be delivered to people more quickly. The ambitious program announced Thursday escalates Google's technological arms race with rival Amazon.com Inc., which also is experimenting with self-flying vehicles to carry merchandise bought by customers of its online store. Amazon is mounting its own challenges to Google in online video, digital advertising and mobile computing in a battle that