Read it through once

Some time during the forenoon, approaching the mountains, we changed from the regular train to one composed of little canvas-sheltered cars that skimmed along within a foot of the ground and seemed to be going fifty miles an hour when they were really making about twenty. Each car had seating capacity for half-a-dozen persons; and when the curtains were up one was substantially out of doors, and could see everywhere, and get all the breeze, and be luxuriously comfortable. It was not a pleasure excursion in name only, but in fact.