Related by context. Frequent words. (Click for all words.) 50 streamliner 48 SkySails 46 Mini Transat 45 #.#mph [006] 45 supersonic 45 Lotus Esprit 45 scramjet engine 45 OSTAR 44 tidal turbine 44 maglev trains 44 Buckeye Bullet 43 propulsion 43 Earthrace 43 sQuba 43 scramjet 43 unpowered 43 super maxi 42 Mari Cha IV 42 airship 42 monoplane 42 electric propulsion 42 unpiloted 42 #mph [001] 42 vertical axis wind turbine 41 Ultimate Aero 41 circumnavigation 41 microlight aircraft 41 hypersonic flight 41 Solar Impulse 41 ICAP Leopard 41 Burt Munro 41 X #B Orbital 41 Hovercraft 41 solar powered 41 canting keel 41 #ft tall [001] 41 hydrofoil 41 Skycar 41 hydrofoils 41 Aerosonde 41 prototype 41 solo circumnavigation 40 diesel engined 40 Virgin Atlantic GlobalFlyer 40 SeaGen 40 diesel powered 40 hovercraft 40 rear engined 40 Bonneville Salt Flats 40 #mph #km h [002] 40 Lotus Elise 40 rotary engine 40 #mpg [001] 39 catamaran 39 ion propulsion 39 Yves Rossy 39 electric drivetrain 39 hovercrafts 39 coachbuilder 39 #.#mph [004] 39 supersonic Concorde 39 Bleriot 39 Mini Clubman 39 glider 39 Dame Ellen MacArthur 39 electrically driven 39 BMW EfficientDynamics 39 jetpack 39 grand tourer 39 AC Propulsion 39 propeller 38 sailmaker 38 electrically powered 38 Wrightbus 38 Kitty Hawk NC 38 reusable spacecraft 38 turbofan engine 38 homebuilt 38 microlight 38 lunar rover 38 tidal turbines 38 VELUX 5 38 monohull 38 clipper ship 38 #.#km h [001] 38 electrolyzer 38 Artemis Transat 38 WhiteKnightTwo 38 Coniston Water 38 Lizard Point 38 BioPower 38 Aptera 38 steel hulled 38 railgun 38 DeLoreans 38 hydrogen powered 38 indigenously designed 37 aerodynamics 37 Pelamis 37 Piccard 37 ECOVER