By 1927 there were over fifteen million Ford automobiles on the roads in the United States. In addition, there were millions of cars produced by other manufacturers.
The proliferation of the automobile and the transition from the car being a toy for the wealthy to a reasonable means of transportation for the middle class broke down class barriers. By the mid and late 1920s people from all different classes could afford to travel from the country to the city on their own schedules.
Which relationship best represents this blending of classes because of the automobile?