An often asked question, but perhaps more relevant to this blog, when does a car become a classic? The reason I raise the question is that over the last weekend we were fortunate to attend the Silverstone Classic. Without doubt this is one of the best events on the classic calendar, it showcases a vast array of both classic road and race cars, as well as fantastic racing. One of the highlights of the weekend is the Retro run which allows drivers of classic cars to participate