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

Related documents: [0]  [DOC] 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. [END] 
[1]  [DOC] 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. [END]  
Answer: The Northeast Regional
The Northeast Regional