4. Citroën DS
Launched in 1955, the Citroën DS was a revolutionary vehicle that looked decades ahead of its time. Its hydro-pneumatic suspension provided a self-leveling ride, regardless of load, and offered variable ground clearance, allowing it to glide over rough roads. The DS also featured front disc brakes, a first for a production car, and a semi-automatic transmission that enabled gear changes without a clutch pedal. Its aerodynamic lines and innovative technology set new standards in automotive design, influencing future trends and solidifying its status as a production marvel in an era of boxy sedans. (whichcar.com.au)