Amazon.com Inc. Prime Air delivery drone is unveiled during a reveal event in Las Vegas, Nevada, U.S. (Photographer: Joe Buglewicz/Bloomberg)

Amazon Unveils Futuristic Helicopter-Plane Hybrid Drone for Deliveries

(Bloomberg) -- Amazon.com Inc. has unveiled a revolutionary new drone -- part helicopter and part science-fiction aircraft -- that the company expects to use for test deliveries of toothpaste and o...