NEC Corp. unveiled Monday a prototype of an electric flying car as it seeks to offer its communications and control technologies to other companies amid the global boom to develop such airborne vehicles.Starting with a roaring sound, the 148-kilogram helicopter-like prototype with a length of 3.9 meters, height of 1.3 meters and width of 3.7 meters came afloat by itself to 3 meters above ground and hovered for several minutes at a testing ground at NEC's Abiko plant in Chiba Prefecture.Equipped with four propellers and unmanned, the prototype moved using NEC's software to control flight and…READ FULL ARTICLE