(CBS News) "Yesterday's tomorrow" was a wondrous place, full of amazing gadgets and technologies many experts told us were just around the corner. So why aren't we there yet? Our Cover Story is reported by Mo Rocca:
The world of tomorrow: Trains zooming from coast to coast via vacuum tubes . . . gleaming cities in the sky . . . and, of course, flying cars. That was what the future was supposed to hold for us.
"I grew up expecting to live on the Moon, to be able to travel in rockets," said writer and illustrator Ron Miller. "When '2001' came out, there was a future that looked really possible. So in 30 odd years we could probably have space stations, and passenger liners going to and from space stations, run by Pan Am!"
But Pan Am doesn't even exist anymore.
"I feel, in a way, I was promised this future, and it's never paid off," Miller laughed. "I'm not on the Moon. I've never ridden in a rocket. I haven't been to a space station. I don't have a flying car."
For all of his life, Miller has dreamed of exploring space. He's had to settle for imagining it, such as the vistas of the Red Planet.
"That's a desert on Mars," he showed Rocca in one painting. "Mars has these wonderful tornadoes all over the place, and usually you can see the track of them."
Architectural historian John Kriskiewicz got his first glimpse of that big, bright, beautiful World of Tomorrow when he visited the 1964 World's Fair in New York.
At five years old, Kriskiewicz wanted to live in this future -- a future that was already in progress.
"We were literally on our way," Kriskiewicz said."By the second season of the Fair in 1965, men had walked in space. We were seeing progress each year" - proof positive that the future was possible.
Fifty years later, a lot of the Fair's predictions weren't exactly spot-on, though it must be said, all those logos were a sign of things to come. One of the things the World's Fair got right was the domination of corporate sponsorship.
But wait a minute, we still don't have flying cars!
"We get this all the time: Where is my flying car? We were promised flying cars!" said James Meigs, editor-in-chief of Popular Mechanics.
Meigs says we could have flying cars right now, but the better question is, do we want them?
"It's such a great fantasy, such a cool idea," said Meigs. "Various ones have been built over the years. There's a company trying to sell some today that work. The problem is that cars and planes are so different. So what you end up with is a terrible plane that, once you land and try to drive around, is a terrible car."
Popular Mechanics has been predicting the future for 111 years now. A lot of times they nailed it.
In 1954 the magazine predicted a television you can hang on your wall -- the flat-screen TV. "It took a long time, but we finally got it," said Meigs.
A lot of times they fell short of the mark: how about mail delivery by parachute?
"Isn't that cool?" said Meigs. "The very early days of air mail people thought, 'Why shouldn't this go right to your house?' More or less feasible, if crazy."
Or vacuum tube-powered trains, that could get you from New York to San Francisco in an hour!
"It would be insanely expensive to build the infrastructure to do it,' explained Meigs.
And then there's the future we're lucky never happened. How about the House of the Future, where everything was more or less plastic? "Everything could be hosed down for convenience," said Meigs. "You wouldn't really do any cooking. Everything would come in frozen blocks that you would just heat up."
A lot of things we have today were conceived by science fiction writers, such as Jules Verne.