SureFly's hybrid electric helicopter achieves first flight
US-based company Workhorse's SureFly hybrid-electric helicopter has achieved its first flight, hovering untethered five feet above the ground. SureFly copter is driven by eight separate propellers and has a top speed of 112 kmph. The helicopter is a vertical-take-off-and-landing (VTOL) drone designed for travel for up to two people with an estimated 112-km range.