[train] The Metroliners were extra-fare express trains between Washington, D.C., and New York City from 1969 to 2006. They were first operated by Penn Central Transportation, successor to the Pennsylvania Railroad, and later by Amtrak. Originally using self-powered electric multiple unit cars (later replaced by locomotive-hauled cars due to... Found on http://en.wikipedia.org/wiki/Metroliner_(train)
(from the article `railroad`) ...1990s to seek easy high-speed rail development. Experimental high-speed projects began in this northeast corridor in the 1960s when both the ... Found on http://www.britannica.com/eb/a-z/m/81