A non-commercial sculpt. I don't think this
was ever commercially available.
From the Lead Bones range by Recreational Conflict
(There is also a 15mm version that might serve
as a single person sled.)
Parroom Station - not sure if this is still available.
Also Parroom Station. Available?
(Note that most of the above craft also have fins and railings, etc that are not yet attached.)
I think there has been a tendency to give the Air Cars found on Tékumel a very "hard sci/fi" sort of look. My personal preference is something more elegant or "retro" looking. :-)
My thinking is that there would surely be hundreds if not thousands of different sorts of air cars around: pleasure craft, industrial, military, etc. There would be custom made versions and there would be air cars operated by the various non-human races present on Tékumel. All of these could look quite different from each other.
It is conceivable that none of the surviving Air Cars even resemble each other!