Somewhere on the south side of Chicago near the IC's Markharm Yard an aging Alco S2 tugs a oversize box car of auto parts and an antique caboose. Maybe to the Ford assembly plant.
The GT and IC connected at Harvey, just north of Markham. The connection has been upgraded now that both railroads are CN.
Thanks for the details. When I was chasing trains I wasn't quite sure where I ended up taking the picture! Especially in south Chicago when it seems like you can pass between 3 communities in 3 blocks.