The term 'HIGH-SPEED AMTRAK OFFERING' is referring to the Acela Express, a high-speed train service operated by Amtrak in the Northeast Corridor of the United States. The Acela Express offers passengers a faster and more comfortable journey between major cities such as Washington D.C., Philadelphia, New York City, and Boston. It is the only high-speed rail service in the United States and has been in operation since 2000.