Opel Vectra
The Opel Gran Turismo Coupé Concept, abbreviated as Opel GTC Concept, was a concept car that was manufactured by Opel which was speculated to be one hypothetical coupé of the Opel Vectra C. The GTC premiered at the 77th Geneva Motor Show in March 2007. The Opel GTC is one such grand tourer, alongside the Opel Flextreme GT/E.