A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
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In the early 1960's, Porsche commercially manufactured farm tractors.
24
Kleenex tissues were originally used as filters in gas masks.
46
More than a billion transistors are manufactured every second.
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The Queen Mary - the grandest vessel of her day - had many of her vital components made by car manufacturer Skoda!
23
