這個還真的算是高鐵，但因為線路不配套限製太多，均速大降。

The Acela (/??s?l?/ ?-SEL-?; originally the Acela Express until September 2019) is Amtrak's flagship passenger train service along the Northeast Corridor (NEC) in the Northeastern United States between Washington, D.C. and Boston via 13 intermediate stops, including Baltimore, New York City and Philadelphia. Acela trains are the fastest in the Americas, reaching 150–160 miles per hour (240–260 km/h) (qualifying as high-speed rail), but only for approximately 40 miles (64 km) of the 457-mile (735 km) route