Beside the freightspotting we take a short trip in the mid 70s. On youtube i found this rare footage of NYCity trains.
I always see simularities between the rusted subwaycars and dirty freight trains. Nevertheless the New York ones were painted at a higher rate than the freights but... we will see how the freight-writing will develop - especially in europe. Maybe in a few years we'll spot a panel near a t2b and a e2e next to a wholecar :)
Check out the Blog of Kaput from Canada. He is quite well known for his freight trains... i like his fresh stuff.
here are some uploads of his freight trains: