For author Jürgen Barth this book was a matter of the heart. After all, the racing driver and long-time Porsche employee achieved the greatest success of his career by winning the 24 Hours of Le Mans in a Porsche 936. Together with his co-author Bernd Dobronz, he not only meticulously traces the creation and further development of this open sports prototype. All the factory deployments of the Porsche 936 in the races of the Sports Car World Championship and the 24 Hours of Le Mans are also reported in an exciting and informative manner on the basis of the records made by the engineers of the time. The result is not only a monograph of a successful model in Porsche's racing history that has received far too little attention to date. Rather, the authors have also succeeded in telling the stories surrounding the triumphs and tragedies of the time, and with it the flair.