There was a definable change in the design language as the ’70s arrived, where hand-crafted curves and old-school organic style of the ’60s gave way to a chiselled, machine-code look of hard lines and brute force. Softness be damned: make it sharp, make it look anti-nature. These are the halo cars that looked, sounded and performed like nothing else on the road; the pin-ups of a generation. And most would still happily grace the walls of any car fan today – even the ones that were just concepts, like the 1970 Porsche Tapiro.