Google is testing using drones to deliver items bought online, putting its own spin on similar efforts by internet retail titan Amazon.com .
Two years of research into what Google referred to as "Project Wing" was capped this month with test flights delivering sweets, water, medicine, dog treats and other items to two farmers in Queensland, Australia.
"Self-flying vehicles could open up entirely new approaches to moving goods," California-based Google said in a blog post disclosing the project on Thursday.
"Throughout history, major changes in how we move goods from place to place have led to new opportunities for economic growth and generally made consumers' lives easier."
Project Wing drones were described as having more in common with Google's self-driving car than remote-controlled aircraft used by hobbyists. Google said it would be several years before a delivery drone system is ready.
Last month, Amazon sought permission for drone test flights in the United States, saying it is moving forward on plans for deliveries using unmanned aircraft.