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With some 70 million new units built each year worldwide, manufacturers have been able to split the market into many very small segments that nonetheless remain profitable.
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To capitalize on their proprietary technological advances, manufacturers introduce new designs ever more frequently. In recent years, Americans have been offered hundreds of different models, about half of them from foreign manufacturers. About one-quarter of these are in the United States, where more than three trillion miles (almost five trillion kilometres) are traveled each year. Passenger cars have emerged as the primary means of family transportation, with an estimated 1.4 billion in operation worldwide. Where was the first practical subway line in the United States? Who was the first woman to break the sound barrier? Test your knowledge.
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