Ключевые слова: air, atmosphere, automobile, c02, car, carbon, city, co2, danger, design, dioxide, dirty, disaster, ecology, emission, emits, engine, environment, environmental, exhaust, flat, fumes, gas, global, icon, illustration, label, lay, mechanics, motor, pipe, pollution, road, smog, smoke, symbol, threat, top, toxic, traffic, transport, transportation, vehicle, view,