Ключевые слова: awareness, bicycle, bike, biking, campaign, car, celebration, clean, cycle, cycling, cyclist, day, earth, eco, ecological, ecology, energy, environment, environmental, exercise, fitness, free, global, green, health, healthy, international, natural, nature, oil, outdoor, pollution, public, race, recycle, responsibility, ride, road, save, sport, transport, transportation, travel, vehicle, walking, wheel, world,