Ключевые слова: abstract, aim, art, auto, automobile, biofuel, car, clean, concept, conception, connect, connection, contour, design, drawing, eco, ecological, ecology, electric, element, energy, environment, friendly, fuel, graphic, green, icon, idea, illustration, industrial, industry, isolated, line, linear, link, meaning, notion, outline, pollution, power, purpose, sign, symbol, technology, thin, transport, vehicle, web,