Vintage 1973: The Colani Motorcycle Study.

Colani's amazing but non-functional motorcycle design study

Wiki:

"Luigi Colani, (born in Berlin on 2 August 1928 as Lutz Colani), is a German industrial designer whose father came from Madulain near St. Moritz in Switzerland and mother from Poland.

The prime characteristic of his designs are the rounded, organic forms, which he terms "biodynamic" and claims are ergonomically superior to traditional designs. His "kitchen satellite" from 1969 is the most prominent example of this school of thought. Many of his designs for small appliances are being mass-produced and marketed, but his larger designs have not been built, "a whole host of futuristic concepts that will have us living in pods and driving cars so flat that leg amputation is the only option."

The earth is round, all the heavenly bodies are round; they all move on round or elliptical orbits. This same image of circular globe-shaped mini worlds orbiting around each other follows us right down to the microcosmos. We are even aroused by round forms in species propagation related eroticism. Why should I join the straying mass who want to make everything angular? I am going to pursue Galileo Galilei's philosophy: my world is also round. — Luigi Colani

His unconventional designs have made him famous, not only in design circles, but also to the general public. He has received numerous design awards.

Colani currently resides in Karlsruhe, Germany."

..and the not-so-successful Yamaha Alula study