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General Motors and Ford created auto financing programs that allowed people can buy cars on credit.
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The NCL motorized the railway system of multiple major US cities.
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The Chrysler became number 2 after General Motors in the United States.
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The US had around 65 million cars. Gasoline consumption had increased 42% since 1945. General Motors was the main manufacturer in the US, followed by Ford and Chrysler.
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Ford opened the Cleveland engine factory, the most automated factory in the world at that time.
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Introduction of the Corvette by General Motors' Chevrolet.
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The US passed the Interstate Highway Act to build a nation-wide network of freeways over 20 years.
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General Motors presented the aircraft-inspired concept car Firebird III that was designed by Harley Earl. It had titanium skin, a gas turbine engine, a double bubble cockpit, cruise control, anti-lock brakes, air conditioning, remote door opener, an automated guidance system, and a joystick controller for steering.
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Chrysler's Imperial was the first to offer cruise control
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Mass transit was destroyed in many cities of the US , because of highway construction sponsored by NCL, ASF and NHUC. Urban freeway become essential to the expansion of the car market since more than 70% of the US population lived in metropolitan areas.
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The United States enacted the Vehicle Air Pollution and Control Act, mandating tighter emission standards
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The US mandated safety standards for automobiles and road traffic safety.
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The United States passed the "Clean Air Act" that limited the pollution caused by cars and called for ending leaded gasoline and adopting catalytic converters.
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There were 112 million cars in the United States, which was almost half the number of cars in the world.
Automobiles had increased from 64 million in 1949 to 281 million in 1972.