OK say it is Monday at your end of the line center....Your city drivers deliver & pick up , both Priority & Economy rated freight through out the day... That night all the Priority freight loads first, using Economy freight to fill any empty schedules if any in a lane. After all P.M. schedule bids depart, the remaining Economy freight would be loaded but not moved...P.M. bids arrive at the hub which service only the Priority freight through the night (P.M. Hub) just like the freight side does now and return to their domiciles Leaving any Economy freight in the yard ( HUB )to be serviced the next day (Day Hub)....The next day, in this case Tuesday drivers off the day hub work the dock on the front side of their bid. After which they depart out to the end of line centers on day runs to bring your center the inbound Economy freight off the day hub and pick up your left over Economy freight from Monday and head back to the hub...Economy freight will not be time defined and will be moved between the Super Hubs by rail and between all other hubs by our own trucks...If your looking for a day run? It would seem a Super Hub would be the place to be....Good Luck To All.