Randy Leffingwell wrote his first book, American Muscle, in 1989 while still on staff at the Los Angeles Times. Since then, he has authored more than 50 other titles, covering subjects from sports cars to motorcycles to farm tractors. Leffingwell is considered one of the top transportation photographers and historians working today. Some of his previous best-selling Motorbooks titles include Art of the Corvette, Porsche 911: Fifty Years, John Deere: A History of the Tractor, and The Harley-Davidson Motor Co. Archive Collection (with Darwin Holmstrom). He lives in Santa Barbara, California.

Hurley Haywood raced Porsches and won for decades in cars from Porsche Werks and the legendary Brumos Team. He won the Rolex 24 at Daytona in 1973, 1975, 1977, 1979, and 1991. Haywood was victorious at Le Mans in 1977 racing a Porsche 936, in 1983 in a Typ 956, and in 1994 driving a Porsche Dauer 962 GT LM. He also finished first overall at Sebring (1973 and 1981). He also earned two IMSA GT Championship titles, a Trans-Am Championship, one SuperCar title, and raced the Indianapolis 500 eighteen times. Haywood is well known to Porsche enthusiasts as the honorary chief--and most sought-after--driving instructor at the Porsche Track Experience at Barber Motor Sports Park. Born May 4, 1948, Haywood retired from professional racing in 2012.