This is a purpose built rail car for spraying the road bed. The substance it is spraying is probably for weed control. It is connected to tank cars that can reasonably be assumed to contain the substance that is being sprayed.
Western Maryland passenger train - looking towards the hillside on the Ridgeley, West Virginia side of the Potomac River
Boy @Witchhammer .... thanks for all the cool pics you post! Unfortunately, I'm old enough to recognize a lot of the places/businesses. Kind of jogs the brain cells...
WTK?!!?? Gotta be 'early photoshop! Just googled it and it says "Marine barge negotiating Chicago River"... I'm still amazed!
Years ago large freighters plied the Chicago River regularly. Google “Medusa Challanger, Chicago River bridges”, the M/C seemed to have a curse on bridges.