66197 tows a lot of air in the form of

an empty looking 04.02 London gateway to Birch Coppice 4M11 Freightliner. It is strange how some workings are absolutely full to the gunwales but others, like this one, are virtually empty. I suppose logistics has something to do with it but it must be an expensive business towing empty wagons about. The train is passing just north of Castlethorpe on the southern WCML near Wolverton.