The world's largest online retailer has pledged to deliver 500 million packages each year by drone from 2030.
The Australian executive in charge of Amazon's air division says it's one of the only ways to get parcels to customers "in under an hour".
The company revealed its bold delivery plan in Boston on Friday, also showing off its latest drone design - a model called the MK30 - that promises a bigger delivery area, quieter operation and the ability to fly in the rain.
