Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
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The ball on top of a flagpole is called a 'truck'.
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Mico headphones read your brainwaves and select music based on your state of mind.
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Sony researchers have developed a refrigerator that only opens when you smile.
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Any modern jet is capable of breaking the sound barrier.
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In the early 1960's, Porsche commercially manufactured farm tractors.
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An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
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