In the mid-sixties, Opel had three vehicle types in its range: estates, saloons and coupés based on saloons. There was no real sports car, nor did anyone expect one from a bourgeois brand. This made the 1965 IAA all the more sensational: there was a sports coupé with a racy, Italian-American shape - and a lightning bolt at the front. Three years later, the "Experimental GT" prototype had become the Opel GT production car and customers were enthusiastic about it. This report goes back to the beginnings, shows the history of development, design influences and conflicting goals, refers to test reports from back then and tells how the Opel GT with 1.1 and 1.9 liter engines feel today. The whole thing is garnished with many historical and current pictures, two original brochures and sound samples.