Cars quiz
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Which car was first mass-produced on a moving assembly line?
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More questions about Cars
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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Which material did vulcanization make tough enough for car tires?
Answer: Rubber
Why: The word vulcanization was not Goodyear's: a friend of his British rival Thomas Hancock coined it after Vulcan, Roman god of fire.
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Why did the three-point seatbelt become standard across all car brands?
Answer: Volvo's open patent
Why: Volvo gave Nils Bohlin's 1959 design away free, and it has since been credited with saving at least a million lives.
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Why did Citroën develop their hydropneumatic suspension system?
Answer: Smooth rough roads
Why: Paul Magès conceived it during the war for France's battered roads, and the 1955 DS was the first car to carry it on all four wheels.
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Why does hydroplaning cause a driver to lose car control?
Answer: Tires ride on standing water
Why: Tire tread grooves are specifically channeled to pump gallons of water out from under the tire every second.
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Why did Mercedes-Benz pull its cars from the 1955 Le Mans race?
Answer: Mass casualty crash
Why: Mercedes had decided before that race to quit racing after 1955 and focus on road cars, so Le Mans did not cause its famous exit.
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Why are vortex generators used on the roof of some cars?
Answer: Delay airflow separation
Why: Mitsubishi wind-tunnel tested delta-wing roof fins on a Lancer Evolution VIII and cut both drag and lift coefficients by 0.006.
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