A James Bond special begins with a celebration of the Aston Martin DB5 as Quentin Willson examines how it came to be part of the most successful product-placement deals in history, and what it is really like to drive one. Alex Riley manages to find an affordable Bond car in the form of the Triumph Stag, which was driven by Sean Connery in Diamonds Are Forever, Bruno Senna gets behind the wheel of a 1951 Aston Martin DB3 and Jodie Kidd checks out a Lotus Esprit.