How long have 1) _____ industrialists been dreaming about flying cars? So long that they're not called flying cars anymore. Now they're "roadable aircraft". And while the 2) _____ for success of such roadable aircrafts are still in doubt, that doesn't mean the 3) _____ of the flying vehicle is dead. We might just need to come at the problem from a different direction. One such new 4) _____ is the PAL-V (personal air land vehicle[车辆]) formed in Europe that changes from a road-going three-wheel motorcycle into a gyrocopter(旋翼机) that appears to fly as well as it drives -which is to say very well in both regards. Where the flying cars have suffered from a lack of lateral stability(横向稳定性) in flight and mechanical 5) _____ on the ground, the PAL-V flies as well as any gyrocopter you're likely to see and, thanks 6) _____ its wonderful suspension(悬浮) system, drives like one of the best three-wheel motorcycles in the streets. The Dutch company behind the project has completed first testing of the PAL-V One prototype(样品) and 7) _____ that it could travel through the air over a distance of up to 275 nautical miles(海里) at a 8) _____ of 95 knots(节). The company recently announced it will begin production of the PAL-V with a limited 9) _____ of 45 vehicles priced at around $400,000 apiece. So while the flying car might not have a place in immediate 10) _____, perhaps a flying, three-wheeled gyrocopter will. A) vehicle B) approach C) confirmed D) aviation E) future F) attach G) chances H) transportation I) concept J) feature K) to L) complexity M) number N) speed O) flight