Also the Isamu Noguchi model:
http://greg.org/archive/2008/12/07/fuller_x_noguchi_colabo_dymaxion_car_model.html
...of which; according to the link it sold for $92,500 at Southby's in 2008!
The [Mechanix Illustrated?] cut-away shows the 'air keel' which disappeared in the real-world Dymaxions. Also missing triangulation in the frame above the front shock mounts. I suspect these pictures were by a magazine staff artist from descriptions.
The first unbuilt Dymaxion (#4) was to be a 6-tired tricycle with inhub motors. And an extensible tailboom for a variable wheelbase.
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Edit: There's a lot of news at
http://blog.hemmings.com/index.php/t...inster-fuller/
Build details of the new replica, #2 has been restored, and original blueprint drawings were found in a random house attic.