I do not like that car in the least. That car reminds me too much of a over-shined tank.
There's something to be said about a Cadillac that I just can't say about any of those cars. The Cadillac Sedan de Ville was a "Full-Sized Luxury Car". You really can't compare a luxury car to a roadster coupe (Mercedes 300SL, MGA 1600, BMW 507) or a sports car (Aston Martin DB2/4). It is apples to oranges. The Cadillac style we are arguing over are the 1950s full-size luxury cars. At least try to meet one of those criteria when you match some European model to a Cadillac; please... choose a full-size car or a luxury car (from about +/- 2 years model year). That'll keep this fair. Perhaps Cadillac is out-classed in Europe. It is still an American icon for style, luxury, and class.
EDIT: Bad formatting...