This is the first ever book devoted exclusively to these six-cylinder ACs. The author opens with a review of the company’s products prior to the introduction of the 16/66 model in 1933. He goes on to give highly detailed descriptions of all models and variants - 16/70, 16/80, 16/90, and the post-war Ace, Aceca and Greyhound - covering every aspect of the chassis, running gear, engines and transmissions, and discusses the changes made to specifications and equipment during production.