Video: On board a singing flat-six Porsche 904 at Tour Auto

The shapely body of the 904 was the very first fibreglass build from Porsche, bonded to a steel chassis for extra stiffness on track. Powered by reliable flat-four and flat-six cylinder engines, the two-seater racer quickly developed into an icon with a reputation for incredible racing durability following strong endurance showings at Nurburgring, and a class-winning performance at Le Mans in 1964. Nimble, reliable and an awful lot of fun to chuck around a tree-lined classic road-rally stage, the 904 is firmly on our favourites list.