I was thinking just the same. Reminds me of an Eldorado. It might be an Eldorado Brougham. It has the same 'torpedos' on the grill (which seem to be on the cars between 53-58) that I saw on many of the reference pictures I used when I recently drew a 1958 Cadillac Eldorado Brougham. It also has those 'shark fin' tails. There's only about 750 or so ever made.
Haha! Hardly. I was only at a car show and writing down names of the old cars, so it was just good fortune that I know a little bit about this Cadillac model. Ask me anything about cylinders and internal features and I'll revert right back to ignorant blonde girl. But thanks for the compliment