Check out the Concept Van at the bottom: '60's Greenbrier Corvair frontend, '55 Buick rearend. http://www.autospeed.com.au/cms/A_109185/article.html
And some more That first article had an older Corvair Greenbrier wagon, since this one is from is more like the real production model. This one is from 1955. And check out that El Camino: http://www.autospeed.com.au/cms/A_0565/article.html
It's the 1955 GMC L'Universelle Truck - a concept delivery vehicle. had a 'bi-fold' side door that lifted up. You can certainly see the influence for the Chevy Corvair Greenbriar...
Briggs was bought and sold like an old shoe, but they designed some of the nicest classics. This page suggests that they had a hand in laying out the early VW: http://www.coachbuilt.com/bui/b/briggs/briggs.htm Here's a whole range of Auto Designers: http://www.coachbuilt.com/
