Few Concept cars have had a longer lifespan with multiple iterations and as many engines as the MERCEDES-BENZ C 111 CONCEPT SUPERCAR.Introduced in 1969 at the Frankfurt Auto Show with a three-rotor Wankel engine; a decade later one of a dozen built and powered with a boosted V-8 is still racking up miles. Originally designed by the legendary Bruno Sacco and developed by a team of engineers led by Rudolph “Rudi” Uhlenhaut, the first and second C 111 platforms were used to experiment with new engi...