Of course, this cartoon by Halas and Batchelor doesn't mention the new mistakes, but it does the old ones, caused by town growing instead of being planned in advance to permit people to live and work in comfort. It was a brave new world for the people who had won the Second World War, and everyone was hopeful. Except, of course, for the people who had done so much better before the war. What was the point of it all if you were stuck in the same place, while others passed you by?
Still, it was a hopeful era three quarters of a century ago. If you ignored minor inconveniences like the Cold War and the Atom Bomb. At least you got well made cartoons like this one.