Thank you so much for your kind and enthusiastic answers. The owner really appreciates every single one. Whenever possible, he stepped back that weekend and watched the visitors' reactions. He even loved it when people took somebody else for the owner. It's the cars that matter.
Some words about the Wundercars. The term "Wundercar", you all know that, is taken from the BMW of NA (Hoffman?) campaign for the E3.
The New Horizon is primarily a piece of art yet fully functional. The exterior is stunning in every respect and it makes you smile, just as intended. It was presented with windows wound down rather for philosophical reasons (New Horizon) than to show off the interior. First series dark blue cloth with no signs of age.
The Inka is just a car. The whole thing looks as if it just came off the assembly line on a day when all production workers were at their best. The one to get envious. Makes one think: If only my car looked one fourth of this.
The California came out as an open car. The intent was to show how beautiful the lower part of the shell is. Thus, the roof was removed (and the doors lengthened, the chassis reinforced etc.). Which leaves the torpedo-shaped part to look at.
The Group 1 is the one for special occasions. In a few days it will participate in a historic hillclimb race in Switzerland. Most uncomfortable with its rollcage and lack of sound deadening material. Appeals to most because it is an adolescent boy's dream. Finally found the courage to tell the owner. His answer was: "Exactly".
Thank you very much again.