A bicycle is not just a vehicle, it is a lifestyle, it is a sport, it is a technology. The invention of the bicycle was one of the most significant events in human history. Since the first bicycle was invented in the early 19th century, it has undergone many changes and improvements. A film about mechanical engineer Sergei Petrovich Dashevsky, who, thanks to his intelligence, ingenuity and hard work, became a multiple world champion in velomobile racing, and also entered the Russian Book of Records, and then the Guinness Book of Records, as the inventor of the smallest bicycle in the world.