Yeair! hybrid gasoline/electric quadcopter boasts impressive numbers
curated by John Payne | May 27, 2015
With an electric motor and a two-stroke motor on each rotor, a quadcopter from German startup Yeair! is claimed to offer a full hour in the air, a top speed of 100 km/h (62 mph), and a fairly hefty 5 kg (11 lb) payload.