It's in H0 scale and made by a French company. I've seen several examples of it. Why? Because it is something else. You also have to Kiosk-miniatures of 1:43 2CV cars in thousands of shapes and colours. It seems there are collectors out there ready to collect anything 2CV. If you like, I can send you a link with a picture.
Is the name Porsche connected in any shape or form to this contraption? (Of course not officially, but that the builders called it something like PorscheEnte or something)