to the chassis-less design of the contemporary 1922 Italian Lancia Lambda luxury car. The transmission used a chain to drive the solid tyre shod wheels. The 1527-cc engine to the ingenious Hounsfield design was started by pulling a lever on the right of the driver. To prove how economical the car was to run, the company ran the slogan "Can you afford to walk?" and calculated that over it would cost more in shoes and socks than to cover the distance by Trojan car. The astronomical success of the Model T accelerated after the First World War, and by the time Ford made his 10 millionth car, half of all cars in the world were Fords. It was so successful that Ford did not purchase any advertising between 1917 and 1923; more than 15 million Model Ts were manufactured, reaching a rate of 9,000 to 10,000 cars a day in 1925, or 2 million annually, more than any other model of its day, at a price of just $240. The need for constant reductions in price through the 1920s reflected increasing competition from newer designs for the relatively unchanged and increasingly obsolescent Model T. In 1923 Chevrolet developed a new car to compete with the Model T, the Chevrolet Series M 'Copper-Cooled', air-cooled car, designed by General Motors engineer at AC Delco Charles Kettering, (who invented the points/condenser ignition system that was in use until the 1980s). It was a rare failure for him, due to uneven cooling of the inline four-cylinder engine. The most development of small economy cars occurred in Europe. There was less emphasis on long-distance automobile travel, a need for vehicles that could navigate narrow streets and alleys in towns and cities (many were unchanged since medieval times), and the narrow and winding roads commonly found in the European countryside. Ettore Bugatti designed a small car for Peugeot. The 1911 Peugeot Bébé Type 19. It had an 850 cc 4-cylinder engine. The Citroën Type A was the first car produced by Citroën from June 1919 to December 1921 in Paris. Citroën had been established to produce the double bevel gears that its logo resembles, but had ended the First World War with large production facilities, from the production of much needed artillery shells for the French army. Andre Citroën was a keen adopter of U.S. car manufacturing ideas and technology in the 1920s and 1930s. Andre