What NJ Commuter rail lines don't exist anymore and have been replaced by NJ bus or other bus?

It seems that I-80 is a straigter route perhaps MARTZ should run service to Andover NJ when the line is built instead of all the way into NYC

In truth, Martz is looking forward to rail service to Scranton. Over the years Martz has had to lengthen schedules into and out of Manhattan because of heavier traffic which means fewer miles per gallon of fuel, more fuel, more pay for drivers, less turnaround or rest time, more buses, etc. It is a costly operation for them and getting more so every year. And Lakeland Bus, I believe, has the franchise/charter for Warren and Sussex Counties to NYC. Trailways was not big in that part of the State and Greyhound no longer serves local routes (used to have stops in Hackettstown and Dover via Rt 46 from Columbia).

Rail service to Scranton seems like one of those trains that is always coming but never comes.