At one point, Amtrak had a really useful overnight special fare between New York and Washington on what was called the Executive Sleeper, which I used a number of times to get good TATL airfares out of JFK, once to South Africa and several times to Europe. They parked a number of sleeper cars at the station in New York in the evening, and one could check in to their sleeper and go to sleep whenever they chose that evening. A train from Boston came by in the wee hours of the morning and those cars were joined onto it. The fare, with the sleeping compartment was about $40. It was great for those TATL late afternoon return flights.
They cancelled those suddenly. I went to the window at the station to check in on a reservation on the Executive Sleeper and was told it was cancelled and no longer running. They put me up at Amtrak expense at a hotel across the street from the station and a business class seat on a train the next morning to DC.