As racing games go, those on two wheels often get the short end of the stick. A shame when you consider the antics of the biking crowd are so often far more thrilling than their over-pampered four-wheeled counterparts - this is a sport that's all about hairy knuckled derring-do, scraping knees against tarmac, rubbing fairings with rivals and somersaulting across the gravel before dusting yourself off and doing it all over again.