I just love those visions of what cars might be - so outrageous! Look at the front bumper - can you say shish kabob?
I would love something like that in my garage - and, at the same time, if you squint and take off the fins and and make the rear windshield a bit smaller you actually have a very timeless shape.
'62 & '63 Caddys had a similar shape with the fins almost added later.