I've developed a fascination with some of these more unusual vehicles…. I think they've genuine potential for a variety of Science Fiction, What-If, and ImagiNation environments. The trouble is, finding some of the weirder ones. Predictably, this has a lot to do with their inter-war origins.
anleiher- I've bookmarked this post. If I find a source, I'll bump the post.
Saginaw- Agreed, that may be the case but,
i) I've no talent for such things myself.
ii) Even in the country of origin of some of these, there seems to be a serious shortage of reference material (very little in English). Admittedly, limited numbers of boutique kits have been/are available for some, in larger scales. But, once again, I'm not up to the job of reverse engineering the model, even if the relevant kit is still available.
One fact that may also be against gaming models surfacing of these things- many historically have truly atrocious mechanical reliability, which is often all too well documented. That doesn't make for a popular kit. We all know of "hangar queens" of one sort or another. This particular vehicle is a case in point.
Where I find models or photos of decent quality, of some of the stranger ones, I'll keep putting them in posts, just to see what might be hiding out there. 
Duck
{edited to add} These are photos from two different sources of a completed 20mm scale resin kit. I don't know if it's still available but, if anyone wants to know the maker, I'll look it up again.
Duck Squared
