A photo of a big boxy freight load, likely a wind turbine nacelle.
Submitted by Mark Faust
Q: Saw a whole CSX Transportation train of these in Sullivan, Ind. What are they? — Mark Faust, Carmel, Ind.
A: The photo you submitted resembles a wind turbine gearbox nacelle, and is probably what the train was full of. Railfans and photographers love the sight of the more exotic wind turbine blades stretched from flatcar to flatcar, but the nacelles, which house gearboxes, are also bulky and tend to be shipped in large numbers. — Trains staff
