Click on pictures to Z O O M in.
 |
 |
 |
Apparently, this car design was started in 1961 and was designed by Citroen’s head style designer, Robert Opron. It was based on the DS which was Citroen’s basic sedan but was clearly targeted at the luxury buyer. It was first shown at the Geneva Motor Show in 1971 as a concept car. The car had advanced styling and suspension as well as a Maserati power-plant and drive train.
Many of the details reflect Opron’s American background, notably the vestiges of ‘fins’ at the rear. Opron worked on aircraft body design and aerodynamics while in the USA, and the SM benefited from this experience. It was unusually aerodynamic for its era[2], with a very low drag coefficient of 0.26[3]. The SM was one of the first production cars to benefit from extensive wind tunnel testing during its design phase[citation needed], and as a result aerodynamic efficiency influenced the final design of many details including the shape of the side mirror, the method of windshield sealing, and the underbelly of the car which featured active aerodynamics, effectively sucking the car to the road at high speed. Even the ventilation intake is located in a “neutral” area on the hood, which makes the ventilator fan regulate the interior ventilation at all road speeds.
More Information on the SM, click here
[2] More Information, click here