This 1975 2+2 coupe ended the first era of Opel’s concept cars, which to date only featured emotional, superb coupes. The GT2 announced a new, rational age of greater efficiency – in fuel consumption, safety, interior space and aerodynamics. While it remained pure and beautiful, it was innovative as it had sliding doors without visible rails. source: www.gmeurope.info Engine & performance: Type: 4-cylinder Capacity: 1897 cc Power: 105 hp @…