Thanks to Chris for proposing this idea. The driving force here is to make the layout more accessible to new members with the addition of some strictly Power Functions related motion. We've also been wanting to integrate the trains into the layout more while also adding more action to the display in general. Public transportation to the rescue!
If we could coordinate this type of line between sections it could add some nice variety to our standard compliment of trains.
Here's an example of what this might look like: