1913 Alfa Aerodinamica, body by Carrozzeria Castagna, might have influenced the designs to follow, like the Dymaxion

Above image via MegaMoto http://megamoto.tumblr.com/
Do you also see the similarities to the below 1921 Rumpler, in the fenders especially Do you also see the similarities to the Dymaxion http://justacarguy.blogspot.com/2007/07/funky-car-that-is-from-one-of-earliest.html

An example of the cool vehicles that Bring A Trailer" has every day

Australian Charger Hemi Six Pack

Mercury Comet Cyclone

1965 Impala NASCAR racer

1959 Ferrari 250 GT California Spider, like the Ferris Bueller car

1957 BMW 503, like the Elvis post a couple weeks ago

Cord 813 Beverly

1922 Battistini coachwork Buick

1914 Hupmobile

So enjoy Bring A Trailer; http://bringatrailer.com/ there is no telling what will show up, last time I looked it was an SCCA racer Mustang from the late 60's, in need of restoration and then you'd be on the vintage racing circuit in great company!

Rare duece type 18 with a custom coach-built cabriolet body

The car varies from the American-made convertible sedan styles; the top has no side rails to slide on.

The car was originally purchased by a high-profile German official. In 1938 or 1939, the car was hidden, actually walled up in a basement in Austria, to prevent military confiscation. In 1947, the car was shipped to England. It arrived stateside in 1964, as the possession of a Wisconsin antique dealer. From there, it was sold to the current owner in Jacksonville.

The bodywork is from Deutsch of Koln, the chassis assembled by the Ford Werks A.G. Koln. Unusual features abound such as an underhood siren, dual flag shafts, a Bosch driving light and spotlight, and trafficators. This is the only known example by this coachbuilder and one of five German-built convertibles known.

Former Staff Car for the Third Reich. Owner was a non-Nazi and hid the car from confiscation by the German Army.

The car has all of its original parts, with the exception of the engine (now correct) that was lost during long ago restoration. There are currently only seven of this body type known in the World.

http://www.jalopyjournal.com/forum/showthread.php?t=397594&page=61

Steuart's Garage, Washington DC about 1920

Photos via http://www.shorpy.com/node/5604?size=_original

Bodywork by Paul Jaray

1930's Benz and Opel were both given an odd 3 vertically stacked hinged windows.

1922 Ley.

All have bodywork by Jaray

Via: http://www.shorey.net/Auto/Miscellaneous%20Pictures/Paul%20Jaray/htmltree.html

Model A trivia; Two different fordor bodies, one made by Murray, one made by Briggs

Close... Murray and Briggs did build fordor sedans for ford for 28-31. The bodies were almost identical between the makers with few exceptions for the cages around the body nuts and minor things like that. The biggest and most visible difference is the top of the arches for the windows on the doors. One had an arch, the other was flat across the top.

The doors are about the only thing that's not interchangeable between the two. In April 31', the fordor dropped the visor, and had a slightly slanted front windshield and A pillars as you mentioned. This was just a design change with Murray and Briggs continuing to make this body style.

The slant window fordors also have the arched window for both makers, making it harder to tell who made the body. The slant windshield fordors are more desirable since there is considerably less wood. These cars have a metal structure, where the 28- early 31's had a wood substructure.
http://www.thesamba.com/vw/forum/viewtopic.php?p=3464045

For everything you want to know about Model A's: http://scootermcrad.blogspot.com/2009/03/everything-you-wanted-to-know-about.html