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The Paul Ricard circuit near Marseilles was only one of many used for pre-season testing of the 919 Hybrid. Florida‘s Sebring track was judged the most demanding.

The Paul Ricard circuit near Marseilles was only one of many used for pre-season testing of the 919 Hybrid. Florida‘s Sebring track was judged the most demanding.

Photo courtesy Porsche Historic Archive

Karl Ludvigsen
Karl Ludvigsen

In addition to his motor industry activities as an executive (with GM, Fiat and Ford) and head of a consulting company, Karl Ludvigsen has been active for over 50 years as an author and historian. As an author, co-author or editor he has some four dozen books to his credit. Needless to say, they are all about cars and the motor industry, Karl's life-long passion.

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