Ключевые слова: 3, 22, abstract, awareness, background, bicycle, bicycle day, bike, biking, blue, car, carbon, celebration, concept, creative, day, delivery, earth, eco, ecology, energy, environment, environmentally, footprint, free, friendly, global, green, healthy, holiday, international, june, natural, nature, neutrality, nonpolluting, pollution, responsibility, save, september, sustainability, sustainable, symbol, transport, vehicle, waste, world, zero,