As Earl Howe wrote in the original autobiography foreword in 1960, though the drivers of his age were fiercely competitive, there were also "friends to meet, stories to tell and almost certainly a party to be enjoyed.". Duncan was certainly larger than life, he wasn't just one of the most successful drivers of the 1950s, but also the man who trespassed at Brooklands, who spent the war in the Fleet Air Arm accidentally trying to drown American Admirals and who was once stopped for speeding whilst rushing to take part in a TV programme on road safety.