Hovertrains

thumb|right|A remaining section of the Aérotrain track near Saran, Loiret, 2006

thumb|right|250px|Duke University Medical Center Patient Rapid Transit|Duke Hospital PRT thumb|right|250px|Narita Airport Terminal 2 Shuttle System A hovertrain, also known as tracked hovercraft (UK) or tracked air-cushion vehicle (US), is a vehicle that is suspended on a cushion of air, similar to a hovercraft, but operates on a guideway. Unlike conventional trains, which use steel wheels on steel rails, hovertrains use air-based lifting systems and a smooth paved surface known as the track or guideway. The concept aims to eliminate rolling resistance and allow very high performance, while al