Thanks to Jim, Chris, and Roger.

Apparently, these are the files types you want for any type of graphic
design:
http://www.vanagonauts.com/index.phtml?catid=156

Here are some random google results:
http://www.horizonnature.com/images/WESTFALIA.jpg
http://www.haywood-sullivan.com/vanagon/my_vanagon/westfalia.600.gif
http://www.roulot.com/images/westfalia_logo.jpg
http://www.tus-westfalia-soelde.de/bilder/emblem.gif
http://www.westfaliacampers.com/eng/My_Westi/minimyjoker.jpg
http://www.hoevelhof.com/werbedruck/logos/westfalia-logo.gif

Grand Prize Winner:
http://www.yellow.co.nz/site/northlandmilkingmachinespecialists/images/logo.jpg

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