The automobile benefited from a host of wartime innovations and improvements—electric starters, air-filled tires, and more powerful engines. Cars were now sleek and brightly polished, complete with headlights and chrome-plated bumpers. In prewar Britain, autos were owned exclusively by the rich. British factories produced 34,000 autos in 1913. After the war, prices dropped, and the middle class could afford cars. By 1937, the British were producing 511,000 autos a year. Increased auto use by the average family led to lifestyle changes. More people traveled for pleasure. In Europe and the United States, new businesses opened to serve the mobile tourist. The auto also affected where people lived and worked. People moved to suburbs and commuted to work in the cities