Word: vibrationless
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Dates: during 1970-1979
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...with a turbine engine tucked away under the hood, made its first appearance. Whining slightly, it was tested at the federal Environmental Protection Agency's lab at Ann Arbor, Mich. EPA officials were delighted with the engine, which works by using compressed air to drive its turbines. Compact, vibrationless and delivering 80 h.p., it runs on any hydrocarbon fuel from kerosene to coal oil. and gets about 15 miles per gallon in urban traffic. It is also 30% lighter (at 250 Ibs.), has 75% fewer moving parts, and is thus cheaper to build and maintain than the standard-size...
...futuristic train is highly functional. As it quickly and quietly gathers speed, it will actually begin to "fly." The streamlined cars will hurtle forward just above the ground at speeds of 300 m.p.h. or more. For the 1,000 passengers on board, the trip will be strikingly smooth and vibrationless...