CITROËN GS (1970-1979)
he GS was supposed to do for small family cars what the DS had done for large saloons 15 years earlier. Conceptually, it was something of a melange of existing Citroën thinking (an air-cooled engine like the 2CV, hydropneumatics suspension like the DS) but in an advanced package. The slippery teardrop shape, Kamm tail and faired-in rear wheels gave it very low drag (0.31Cd), which allowed it to cruise at fast motorway speeds economically and quietly
