Cadillac exhibited three such cars, two of which (El Camino, La Espada) were variations on a two-passenger theme. The other was a comparatively conservative four-door sedan, the Park Avenue. It is the subject of this post.
The 1954 model year was when General Motors startled the buying public with completely restyled Oldsmobiles, Buicks and Cadillacs. These cars featured low hood and trunk lines (compared to previous designs) and panoramic (or wraparound) windshields. The effect was quite futuristic at the time.
The next Cadillac redesign would be for 1957, so when the Park Avenue was conceived, 1957 styling was still somewhat in flux while the market reaction to the new '54s was being evaluated. Even so, the Park Avenue anticipated several features found on the 1957s.