Story : Forty years to the day after the first post-war British Grand Prix was held there, William Woollard visits a much developed Silverstone circuit for the final round of the Formula 3 Championship. To complete his reports on the various training formulas leading to Grand Prix status, Tiff Needell track tests a Formula 3 and Formula 3000 racing car. Forty years ago this month, the motoring world was astonished by the arrival of the Jaguar XK120. Frank Page reassesses a classic sports car that lifted a little of the gloom of post-war Britain. Plus a road test on the new Vauxhall Cavalier, and Chris Goffey investigates the arcane world of the salvage trade.