Jim Clark was the perfect driver. Double F1 world champion. First Brit to win the Indy 500. There were fewer Grands Prix per year back in the 1960s, but he always had to be racing – if not in Formula 1, then Formula 2, or thrashing a Lotus Cortina around in the British Touring Car series. I was 13 when Jim Clark won his first World Championship, and 17 when he died. Motor racing was a really dangerous game: every year we lost one or two drivers. But not Jim Clark: heros are meant to be immortal….