Related by context. Frequent words. (Click for all words.) 61 Karl Benz 60 Gottlieb Daimler 60 Ferdinand Porsche 52 rotary engine 51 Bluetec 50 horseless carriage 50 Dr. Ing 50 BlueTec 50 AFS Trinity 50 rear engined 50 cleanest diesel 49 Volkswagen Scirocco 49 Ovshinsky 48 internal combustion engine 48 hybrid powertrains 48 cyanobacterium 48 combustion engine 48 diesel engine 48 compression ignition 48 Ford EcoBoost 48 EcoMotors 47 inventor 47 XL1 47 invention 46 internal combustion 46 Wiesmann 46 microcar 46 Ford GT# 46 diesel engines 46 hybrid drivetrain 46 electric powertrain 46 Henrik Fisker 46 BioPower 45 Dr. Jonas Salk 45 spark ignition 45 Giugiaro 45 AC Propulsion 45 turbocharged engines 45 internal combustion engines 45 hybrid powertrain 45 electric hybrid 45 Horch 45 Hybrid Synergy Drive 45 Louis Pasteur 44 inventor Dean Kamen 44 invented 44 Lotus Engineering 44 electric drivetrain 44 Nikola Tesla 44 Hybrid Vehicle 44 BlueEFFICIENCY 43 turbo diesel engine 43 #mpg [001] 43 Johannes Gutenberg 43 Buckminster Fuller 43 bio ethanol 43 LS9 43 electric propulsion 43 Vikram Sarabhai 43 diesel powered 43 AuraGen 43 conventional internal combustion 43 Audi R# 43 Popular Mechanics magazine 43 #cc engine 42 coachbuilder 42 EfficientDynamics 42 Thomas Alva Edison 42 Richard Feynman 42 EcoBoost engines 42 Valmet 42 Shell Hydrogen 42 Inbicon 42 Stephen Wolfram 42 hybrid propulsion 42 Edward Teller 42 electrically driven 42 Fischer Tropsch 42 MultiAir 42 mid engined 42 hydrogen internal combustion 42 Honda Civic GX 42 VW Beetle 42 turbocharged diesel 42 EDAG 42 diesel engined 41 BMW EfficientDynamics 41 E# AMG 41 E = mc2 41 Audi e tron 41 Vorsprung durch Technik 41 inventions 41 A6 Avant 41 grand tourer 41 World Columbian Exposition 41 Wang Chuanfu 41 Audi quattro 41 Wernher von Braun 41 V6 diesel 41 Homi Bhabha 41 Christian von Koenigsegg