Eric, I know that you probably don't subscribe to a common fishy heritage, but fins maketh the 50s classic. Even with sports cars: the Jag D-Type had a huge one right in the middle of it's rear end. (I had to rewrite that last sentence twice.)
I'm not sure I'd want to be back here in thirty years; I'm finding the current world isn't as good as the old one, so heaven knows how I'd feel in an even newer one. I sympathise with My Rip Van W. I'm sure if I did return, and even mentioned Kodachrome, that I'd be instantly locked away as a reactionary subversive or something as out of character as that.
Imagine arriving to discover rap being considered the new musical classic... enough to drive you back whence you came at top speed.
However, I could enjoy an endless belt system that ran from 1954 to 1984 over and over and over... not a musical one, a life one.
Rob C