The Coggiola Sylvia was a concept car built by Coggiola in 1973. The car was a liftback coupe based on the Opel GT with a 2430mm wheelbase and designed by Trevor Fiore. It was a proposal for a replacement for the Opel GT. The car remained a one-off. The Sylvia has a length of 4110 mm, a width of 1620 mm, and a height of 1200 mm.
Source: Coggiola Sylvia - classiccars.fandom.com. https://classiccars.fandom.com/wiki/Coggiola_Sylvia
Images: COGGIOLA S.p.A.