High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! The Premium platform is Opel's and Fiat's high-end automobile platform. The architecture debuted with the Alfa Romeo Brera. Even after the dissolution of the GM/Fiat partnership, both companies retain the rights to continue developing Premium-derived models, though no GM versions are known. The platform was mainly developed in Sweden by Saab, with input from Alfa Romeo, Holden, and Opel/Vauxhall. Saab stopped development of its Premium automobile in late 2002; the Saab models (the 9X sports car and the replacement for the 9-5 sedan) would have used an entirely different suspension than the Alfa Romeo vehicles, which would have proved too expensive. The platform debuted in 2003 with the Opel Insignia concept car, though this vehicle was not produced. A planned Buick model was also dropped. In the end, only the Alfa Romeo models moved forward. Many of the GM models originally set to use the Premium platform are now planned to use the GM Epsilon II platform.