I've decided to merge this one rather than delete it, although the spelling I have for it is rather different from the original puzzle.
It's the Ducat by Swiss Günter Dukat, based on a 1977 VW Golf. That's how the museum spell it so I suppose they're right but of course since its title is 'Dukat' in the origial puzzle it didn't show up when I searched.
Oddly gte4289 guessed the puzzle right next to it was the Ducat and I thought I was seeing things, but that was a straight-lined rear view of a different car and he never noticed that this was the car he was talking about!