Which post war decade looked the coolest visually as far as clothing, car design, art etc ?

I would say the 1970’s because the 70’s I feel was the last decade that wasn’t ripping from past decades whole cloth, and had a look that was 100% it’s own. The 80’s with its obsession with neon and the cyber punk aesthetic was borrowing heavily from the 1950’s. The 90’s was a more vapid and shallow 1960’s redux. We were rebelling but rebelling against stupid stuff rather then important stuff. The 2000’s was a cheesier remake of the 70’s aesthetic. Afros and shiny disco clothing even came back. And the 2010’s was a 80’s redux. The 70’s was was the last decade that was obviously ripping from some other decade.