Question: What is the busiest Amtrak route that does not stop at either Lortorn Station?

full_context: Document 1: Lorton station (VRE): Lorton station is a railroad station located at 8990 Lorton Station Boulevard in Lorton, Virginia. It is served by the Virginia Railway Express Fredericksburg Line. This station is one mile north from Amtrak's Lorton station, the northern terminus of the "Auto Train". Amtrak's "Northeast Regional", "Silver Meteor", "Silver Star", "Palmetto", and "Carolinian" trains share the line but do not stop at either Lorton station.
Document 2: Northeast Corridor: The Northeast Corridor (NEC) is an electrified railway line in the Northeast megalopolis of the United States. Owned primarily by Amtrak, it runs from Boston through Providence, New York City, Philadelphia, and Baltimore to Washington, D.C.. The NEC closely parallels Interstate 95 for most of its length, and is the busiest passenger rail line in the United States by ridership and service frequency as of 2013. Branches to Harrisburg, Pennsylvania, and Springfield, Massachusetts, though not considered part of the Northeast Corridor, see frequent service from routes that run largely on the corridor.
Document 3: Everett Station: Everett Station is an Amtrak train station serving the city of Everett, Washington. The station has provided service to the "Cascades" and "Empire Builder" routes since its opening in 2002, replacing an earlier station near the Port of Everett. The four-story building also houses social service programs and is the center of a 10 acre complex that includes parking lots and a large bus station used primarily by Community Transit, Everett Transit, and Sound Transit Express. The station has served as the northern terminus of the Sounder North Line since 2003 and Swift Bus Rapid Transit since 2009. It consists of two side platforms, one serving Amtrak and the other serving Sounder commuter trains. Everett Station also functions as a park and ride, with 1,067 short-term parking spaces located in lots around the station after it was expanded by Sound Transit in 2009.
Document 4: Hanoi Railway Station: Hanoi Railway Station is one of the main railway stations on the North–South Railway (Reunification Express) in Vietnam. It serves the city of Hanoi. The station is located at 120 Lê Duẩn Street, Cua Nam Ward, Hoan Kiem District of Hanoi and is the starting point of five railway lines leading to almost every Vietnamese province. Train street is very famous narrow gap railway line were train moving very tight space inbetween old houses in HaNoi.
Document 5: Fredericksburg Line: The Fredericksburg Line is a commuter rail line operated by Virginia Railway Express between Washington, D.C. and Fredericksburg, VA. Virginia Railway Express operates 7 weekday trains, and Amtrak trains serve a few of the stations on the line. Trackage is owned by CSX as part of their RF&P Subdivision.
Document 6: Acela Express: The Acela Express ( ; colloquially abbreviated to Acela) is Amtrak's flagship service along the Northeast Corridor (NEC) in the Northeast United States between Washington, D.C. and Boston via 14 intermediate stops including Baltimore, Philadelphia, and New York City. The route contains segments of high-speed rail, and Acela Express trains are the fastest trainsets in the Americas; they attain 150 mph on 28 mile of the route.
Document 7: Northeast Regional: The Northeast Regional is a higher-speed rail service operated by Amtrak in the Northeastern and Mid-Atlantic United States. In the past it has been known as the "NortheastDirect", "Acela Regional", or "Regional". It is the busiest Amtrak route, carrying 8.04 million passengers in fiscal year (FY) 2013, a 0.4% increase over the 8.01 million passengers in FY2012. The "Northeast Regional" service earned over $568.7 million in gross ticket revenue in FY2013, a 6.2% increase over the $536 million earned during FY2012.
Document 8: Amtrak: The National Railroad Passenger Corporation, doing business as Amtrak , is a passenger railroad service that provides medium- and long-distance intercity service in the contiguous United States. Founded in 1971 to take over most of the remaining U.S. passenger rail services, it is partially government funded yet operated and managed as a for-profit corporation.
Document 9: Northeast Corridor Line: The Northeast Corridor Line is a commuter rail operation run by New Jersey Transit along Amtrak's Northeast Corridor in the United States. It is the successor to Pennsylvania Railroad trains between Trenton Transit Center and New York Penn Station. After arrival at New York Penn Station, some trains load passengers and return to New Jersey, while others continue east to Sunnyside Yard for storage. Most servicing is done at the Morrisville Yard, at the west end of the line. The Northeast Corridor Line is colored red on New Jersey Transit system maps and its symbol is the State House. The Princeton Branch is a shuttle service connecting to the line.
Document 10: Crescent (train): The Crescent is a passenger train operated by Amtrak in the eastern part of the United States. It operates 1377 mi daily between Pennsylvania Station in New York City and Union Passenger Terminal in New Orleans, as train numbers 19 and 20. Most of the route of the "Crescent" is on the Norfolk Southern Railway. The "Crescent" passes through more states, including the District of Columbia, than any other Amtrak route.
Document 11: Jacksonville station: Jacksonville station is an Amtrak train station in Jacksonville, Florida, United States. It serves the "Silver Meteor" and "Silver Star" trains as well as the Thruway Motorcoach to Lakeland. The station lies next door to a freight facility with its own platform and is also just east of Norfolk Southern's Simpson Yard.
Document 12: Orlando Health/Amtrak station: Orlando Health/Amtrak station, also known as Orlando station, is a train station in Orlando, Florida. It is served by Amtrak, the national railroad passenger system of the United States, and SunRail, the commuter rail service of Greater Orlando, as well as local and intercity buses. It serves Amtrak's "Silver Meteor" and "Silver Star" lines. Built in 1926, the historic station is located approximately one mile south of Downtown Orlando near the campus of Orlando Health. Serving 160,442 passengers at last measure in 2013, The station is Amtrak's fifth busiest in the Southeastern United States; it is the second busiest Amtrak station in Florida, behind the Sanford station of the Auto Train.
Document 13: High-speed rail in the United States: Plans for high-speed rail in the United States date back to the High Speed Ground Transportation Act of 1965. Various state and federal proposals have followed. Despite being one of the world's first countries to get high-speed trains (the Metroliner service in 1969), it failed to spread. Definitions of what constitutes high-speed rail vary, including a range of speeds over 110 miles per hour and dedicated rail lines. Inter-city rail in the United States with top speeds of 90 mph or more but below 125 mph is sometimes referred to as higher-speed rail. The Acela Express (reaching 150 mph) and the Northeast Regional (reaching 125 mph) are currently the only services in the country (the Metroliner was discontinued in 2006).
Document 14: Mount Vernon East (Metro-North station): The Mount Vernon East Metro-North Railroad station serves passengers at Mount Vernon, New York, via the New Haven Line. The station is the first station north of the junction where the New Haven Line splits from the Harlem Line and is the only station on the line before it changes from third rail power to overhead catenary power, which takes place north of there, between Mount Vernon East and Pelham stations. Some New Haven Railroad-era overhead catenary poles can still be found southwest of the Gramatan Avenue bridge. After Pelham, the New Haven Line joins the Northeast Corridor at New Rochelle.
Document 15: Keystone Service: Amtrak's 195-mile (314 km) Keystone Service provides frequent higher speed passenger train service along the Amtrak Philadelphia to Harrisburg Main Line between the Harrisburg Transportation Center in Harrisburg, Pennsylvania and 30th Street Station in Philadelphia. Most trains continue along the Northeast Corridor (NEC) to Pennsylvania Station in New York.
ground_truth: The Northeast Regional