what is the point of the keirin bike race
Keirin Keirin (競輪 / ケイリン, [keːɾiɴ]) – literally "competition ring" – is a form of motor-paced cycle racing in which track cyclists sprint for victory following a speed-controlled start behind a motorized or non-motorized pacer. It was developed in Japan around 1948 for gambling purposes and became an official event at the 2000 Olympics in Sydney, Australia.