Your guess is probably better than mine on the cool looking car. The front wheel coverings said Buick, so I'll go with that. Mid 50s feels right. I'm not a car guy in general. Couldn't tell you most from another.
My wife knows more about car shapes than I do. I just know what I like. And I like big, wide, and older. Cars and bikes should both have big fenders.

Here is a pic of a mural in my summer time town.