For automobiles to become a permanent fixture on the American landscaperather than simply a toy for the richpeople needed to be convinced that they were reliable, useful, appropriate, and even necessary. In the early years of motoring, not all Americans were convinced that the new devil wagons were here to stay. But as people came to value the convenience of the car, and as they adapted it to their own needs, cars became a significant part of everyday life.
To cope with the changes that automobility brought, the nation developed an elaborate system of law, commerce, and custom. Americans wrote new laws, rebuilt roads, and developed new production techniques. A slew of businessesgas stations, tire shops, garagessprang up to supply drivers needs. By 1930, 23 million cars were on the road, and more than half of American families owned a car.