In 1966, Ed Kay's design for a 3-wheeled commuter car was chosen as one of the runner up winners in a competition in Popular Mechanics Magazine. November 1965.
More about the competition here on a google archives:
http://books.google.com/books?id=BeMDAAAAMBAJ&lpg=PA88&ots=Nxkt-KbL8j&dq=Suburba-car%20%22popular%20mechanics%22&pg=PA88#v=onepage&q=Suburba-car%20%22popular%20mechanics%22&f=false