Motor vehicles 979 Design and construction 454 Automobiles 415 Electric vehicles 242 Hybrid electric vehicles 202 Dynamics 195 Automatic control 178 Space vehicles 169 Automated guided vehicle systems 139 Motors 113 Maintenance and repair 80 Aerodynamics 79 Vehicles 75 Safety measures 72 Vehicles, Remotely piloted 65 Electronic equipment 58 Fuel cells 55 Computer simulation 54 Mobile robots 54 Technological innovations 54 Mathematical models 51 Steering-gear 51 Alternative fuel vehicles 49 Power supply 49 Data processing 47 Exhaust gas 46 Airplanes 43 Vibration 43 Springs and suspension 42 Intelligent control systems 41