High Quality Content by WIKIPEDIA articles! The Alfa Romeo SZ (Sprint Zagato) or ES-30 (Experimental Sportscar 3.0 litre) is a high-performance limited-production sports car/road-concept car built between 1989 and 1991 with partnership via Centro Stile Zagato, Centro Stile Alfa Romeo and Centro Stile Fiat. It was unveiled as ES-30 in 1989 Geneva Motor Show as a prototype by Zagato, although the car was mainly built by them - not designed mechanically.