In 1909 Chief J. H. Haager of Louisville, Kentucky, predicted that the automobile would revolutionize police work and have a profound impact on policing. The police were not the only ones making use of the automobile, however; the American public also was becoming increasingly more mobile, as evidenced by the increase in car registrations between 1900 and 1930 from 8,000 to almost 27 million. Haager’s prediction became true and the automobile is now a major factor in everyone’s life.