Very well done Wendax!
This is indeed a very early attempt at car styling by Mr.Colani - perhaps even his first - meant for the Fiat 1100 running gear. This was so early in his career that he wasn't even 'Luigi' Colani yet, he was still known as Lutz.
I'd like to award you the second point, but I think I will hold back as an added incentive for someone to find me a picture showing the whole completed car (if indeed it ever was completed)