If someone asks me what my favorite railroad is, I say the lofty sounding Detroit, Toledo, and Ironton.

Here are some facts of the DT&I:

It ran down south out of Detroit, bypassed Toledo (it had a branch), and ran across western Ohio to Lima and Springfield, then SE to Washington Court House, Jackson, and then it's namesake town on the Ohio River.
Henry Ford owned it from 1920-27. He tried to turn a shortline into a concrete built, state-of-the-art railroad that could compete with the class 1's.
He sold it to the parent company of the Pennsylvania RR, who gave it trackage rights into Cincinnati. Trackage rights that are still valid today over NS, despite the original line being abandoned.
Engines first had chrome casted heralds, then giant black block lettering with a compass herald. Lastly, they had a brief 3-D herald that looked like a sports team logo. All diesels were painted solid orange.
DT&I was sold to the Grand Trunk Western in 1980. Four years later, they merge and GTW paints all engines into red/blue. They slowly start pulling the line up from Ironton to Washington Court House.
Canadian National Corp sells remainder of line to regional Indiana & Ohio in 1999, save a few tracks around Detroit.
I&O still moves traffic from Cincinnati to Detroit as the only route around Toledo, which allows the line to stay somewhat profitable.

But, along the line there are signs of life, showing that the DT&I just won't die. Here's one. What could this be...