The Tennessee Valley Railroad Museum has just posted (literaly a half-hour ago) the schedule for the mainline excursions behind Southern 2-8-0 #630. One of those trips will be over the prototype for the Trainz route 'The Loops', origionally made by gfisher and updated to Trainz 12 by MSGSapper.
Click here -> http://tvrail.com/pages/21st-Century-Steam
Click here -> http://tvrail.com/pages/21st-Century-Steam