This superb book tells the story of one of the most historically interesting of all Jaguar D-types, the XKD 504. This is a car that has raced more than any other D-type across its long and varied life, and this life is recounted in full. From its role as a works car used extensively for testing fuel injection, to two seasons of racing throughout Europe with Ecurie Ecosse, to four busy years of national competition in the hands of first Mike Salmon and then Peter Sutcliffe, it's all here. This book provides fascinating insight into every aspect of this D-type's history, supported by a fine collection of period photographs.