VW Beutler 696 Porsche??
Golden car with white roof was equipped with a Porsche 356 A 1600 Super engine (75BHP). It is also displayed in Wolfsburg Volkswagen museum named "VW Porsche Beutler Typ 57", but actually is different from the red one you've posted.
This particular red one was shown on Geneve Autosalon 2005 '100 years of Swiss coachwork'.
It was in private use of Mr. Beutler himself till the late nineties. It is simply called "1956 Porsche 1600 Beutler coupe"
There also exists a very similar yellow car which is called (1958) Beutler Porsche 356B, but that one has sharper fins at the back wings.
I'm looking forward for the first I'll introduce here..