This was Geneva's show stopper and arguably one of the best concept cars unveiled at the motor show. The 4C is Alfa Romeo's foray into the compact performance coupes (think Mercedes SLK and company). This wonderfully crafted automobile is made from a mixture of aluminium and carbon fiber keepings its overall curbweight at 1870 pounds. Couple the latter with Alfa's customary turbo charged 4 cylinder 1.7L Turbo engine pumping out 200+ bhp and the 4C is capable of 0-100 km/h in less than five seconds.