Soooooo......

[Alex]

And I'm always interested in what is missed. He projects massive improvements in transportation (many of which are essentially correct), but essentially misses air travel which would have actually been predicting something newish instead of just a steady improvement of current technology.

There will be airships but they will not successfully compete with surface cars and water vessels for passenger or freight traffic. They will be maintained as deadly war vessels by all military nations. Some will transport men and goods. Others will be used by scientists making observations at great heights above the earth.