Automobiles 68 Automobile industry and trade 43 Design and construction 16 Motor vehicles 9 Environmental aspects 8 Fuel consumption 8 Motors 8 Automobile parking 7 Human engineering 7 Springs and suspension 7 Technological innovations 7 Automobile driving 6 Safety measures 6 Attitudes 5 Automobile license plates 5 Case studies 5 Management 5 Marketing 5 Automatic control 4 Automobile drivers 4 Automobile ownership 4 Biodiesel fuels 4 Consumer behavior 4 Economic aspects 4 Equipment and supplies 4 Intelligent transportation systems 4 Mathematical models 4 Motor fuels 4 Risk assessment 4 Testing 4