Sonia Delaunay, 1925 design for clothes and cars (Citroen B12)

Image via: http://www.artbeat123.com/marymac/sandr.html

Trivia

The 1931 Royale had 36 inch rims / wheels. So big, they had to have tires made specially by Michelin. According to "The Automobile" by Cheetham, they were the largest ever fitted to a road car.
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Citreon
The double chevron emblem represented meshing gears

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Cord 810/812
The headlights were from the Stinson aircraft, Cord/Auburn also owned Stinson

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Oldsmobile Starfire had a design of tailfins that were upside down, and below the rear bumper.. they were called "Skegs"