Well it's actually Tucker I was looking for; you hadn't mentioned the name previously on its own!
I've seen those threads about the Tucker-Tremulis-Neidlinger-Kaiser-Frazer as well but I believe that covers a whole series of cars (which this one may indeed have ultimately joined) but as far as I understand it Tremulis designed this, his Concept Sports Car, whilst still doing work for Tucker and only resurrected the same thing later when he started working for Kaiser-Frazer. If I'm wrong I'm sure someone more knowledgeable than I will correct me; I'm not a big expert on these designs.