Sorry targhediferro but Wendax has the right answer!
The car is, I believe, the same one Wendax has provided a link to in another thread, which was not actually the subject of that puzzle in that version (I don't think the subject of that puzzle was ever produced in series).
It is the prototype of the car which was produced in a very small series (as per the photo below) 1963-5 by Form in Plastic GmbH of Munich, but differs from that production car in details such as the front indicators.
I originally thought it was a coupé version, but in fact it is the same car with a hardtop.
Well done and 1 point to Wendax.