There are thouthands of such cnetidadas in Moscow every summer. Most of them even don`t have a driving license or a number plates on their bikes. They use that cops are not allowed to pursue bikers. There is an anekdote:On Vorobievy hills in Moscow is a biker meeting place. On one side meets old bikers with heavy choopers, on other young gyus with sportbikes. They never communicated with each other. Once one young guy drived fast to the old bikers, made willie and asked, why old bikers never even speak to them. The answer was: For what you all are always new for every season .