Hi Ray
I've been thinking about this; you might try one of the library's associated with an auto museum. Here are 2 that I know about... I'm sure there are more.
http://www.blackhawkmuseum.org/library.html http://www.automuseum.org/NAM_research_library2.shtml Also it seems to me that back in the days before computers, the reference desk at the public library had an index to perodicals that listed articles by subject for all magazines by year. If you have an older library around, you might giveit a shot. (An older librarian might help too)
That article is out there some where waiting for you, it just might not be as good as you remimber it.
Leif