The Rise and Fall of American Growth: The U.S. Standard of Living since the Civil War (The Princeton Economic History of the Western World Book 70)

by Robert J. Gordon

In 1900, there were only 8,000 motor cars registered in the United States, but the number skyrocketed to 468,000 in 1910, 9 million in 1920, and 23 million in 1929. Most astonishing, the total power created by automobiles exceeded that of all farm animals as early as 1910.