For all the heavy traffic, for which there was no need of haste, came in gigantic sailing ships from the ends of the earth, and the heavy goods for which there was urgency in mechanical ships of a smaller swifter sort.
And to the south over the hills came vast aqueducts with sea water for the sewers, and in three separate directions ran pallid lines--the roads, stippled with moving grey specks.

On the first occasion that offered he was determined to go out and see these roads.

That would come after the flying ship he was presently to try.

His attendant officer described them as a pair of gently curving surfaces a hundred yards wide, each one for the traffic going in one direction, and made of a substance called Eadhamite--an artificial substance, so far as he could gather, resembling toughened glass.

Along this shot a strange traffic of narrow rubber-shod vehicles, great single wheels, two and four wheeled vehicles, sweeping along at velocities of from one to six miles a minute.