Ключевые слова: abstract, action, arena, bike, bleachers, blue, chairs, championship, competition, dangerous, dirt, engine, event, extreme, extremesport, fast, flag, friends, grand, gravel, grey, indoor, many, monster, moto, motor, motorbike, motorcycle, motorsport, one, power, prix, race, racer, speed, speedway, speedwaybike, speedwaybikes, speedwaygp, sport, stockholm, sweden, venue, yellow,