John authored the 365 page, SL Resource Book, The SL Experience - Five Decades of the Mercedes-Benz SL; about the most collectible models today: 1954 through 2002, which you may purchase an autographed copy of here.This work and ownership adventures with each model have lead to vintage racing, concour d'elegance competition and national judging, founding the M-100 Group (for 6.3, 6.9 and 600 owners) and serving on the national boards of two other well known Mercedes-Benz clubs.