As much as I hate to do this (says the smiling, smirking scientist in the crowd), I thought I'd interject some real numbers into this discussion in regards to the numbers of cars being interchanged between CMQ and WACR in Newport, Vermont:
Based on observations of 26 WACR trains during the 2nd quarter of 2016, CMQ and WACR interchanged an average of 45 cars per week in Newport. However (and this is an important caveat), only half of those cars were loads, and the other half were empties, so that there were roughly 22-23 loads per week moving through this interchange.
Thus, CN9634's quoted 60-70 cars per week is probably roughly correct, as I assume that his number includes both loads and empties as well as the cars being moved for customers along the Newport Subdivision (Performance Plastics and Kaytec in Cowansville; Blue Seal Feeds in Richford; and Poulin Grain, Feed Commodities, and Columbia Forest Products in Newport).
Obviously, this is far below the 50 loads per week that CMQ committed to delivering when they asked the VRS to increase their operations to five days per week (or the 100 cars per day they apparently flouted when they first took over the former MMA) and only about 40% of what the MMA and WACR were interchanging in the 2nd quarter of 2013, just prior to the MMA's demise.
I hope these numbers help.
Have a good day,