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  "path": "/823277/grumman-tracked-levitated-research-vehicle-tlrv-1972-an-experimental-hovertrain-part-of-a-u-s-government-initiative-to-develop-high-speed-ground-transportation-that-could-reach-speeds-up-to/",
  "publishedAt": "2026-04-30T00:51:45.000Z",
  "site": "https://www.usluck.com",
  "tags": [
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  "textContent": "The three turbofan engines on top provided the air for both levitation and forward thrust (aero-propulsion). by SevenSharp",
  "title": "Grumman Tracked Levitated Research Vehicle (TLRV) . 1972 . An experimental “hovertrain” , part of a U.S. government initiative to develop high-speed ground transportation that could reach speeds up to 300 mph ."
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