Joel N. Weber II
Engineer
A few minutes before I read your post, it was occuring to me that indeed, ferrying an entire Viewliner might be easiest.The next train from New York to Boston (after 9:45 pm) is train 66, which leaves NYP at 3:15 am and arrives in Boston just before 8:00 am. This train does have a baggage car, at least.
I don't know what kind of Viewliner-specific parts might break that would need to be fixed in Boston, nor do I know how long it might take to fix them. In any event, they'd have a 3-4 hour window in which to fix the issue.
Who knows? Depending on the nature of the issue, and whatever spare equipment might be available, it might be easier to ferry a Viewliner up on 66 from Sunnyside, and send the broken one down to New York to get fixed.
On the other hand, if something is discovered last-minute, they'd have no choice but to blank the sleeper line (unless, again, Sunnyside had an extra Viewliner that they could attach to the regular Lake Shore).
If there's something wrong with the Viewliner that's discovered before #448 gets to Boston, even if the train is an hour or two late, there's plenty of time to notice that a spare should be ferried up on #66 in time for it to get to Boston long before the next #449 departs. (And #66 is the best train for this type of ferrying since its schedule has the most padding of all the northbound Northeast Regional trains.)
The broken Viewliner may not manage to catch the same day's #67 unless #67 is held up to wait for it, but it could probably catch a different Northeast Regional. Or if it's sufficiently broken to be emptied out before reaching ALB, it could go as part of #48 to New York City.
If a problem isn't discovered until, say, 11:30 AM, then yes, the best option may be to ferry a spare Viewliner (if one is available) to ALB on #49, and let the Boston passengers ride in coach, or maybe if there's a club-dinnette car available, put that on #449 and let the sleeper passengers ride in that. This doesn't seem any substantially worse than the September 2008 state of affairs. (I'd much rather have a 98% chance of a Viewliner and a 2% chance of coach than a 100% chance of a club-dinnette.)
Furthermore, if there's no spare Viewliner at Sunnyside, then under the September 2008 scheme, any last minute problems that can't be quickly solved also require bumping sleeper passengers to coach.