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 warvessels by all military nations. Some will transport men and goods. Others will be used by scientists making observations at great heights above the earth.
Tom Geoghegan. "Ten 100-year predictions that came true", BBC News Magazine. 11 Jan 2012. http://www.bbc.co.uk/news/magazine-16444966