I will definitely get a few of these cars. I have a steam power plant (Kyrene road in Tempe, AZ) that burns oil to make steam. These look like the type of cars as well as the Atlas 25K car.
I wish I could bend Athearns ear to have them produce their HO Sulfuric Acid tank in N-Scale. I needs lots of those.
What sort of tank car would transport tar? Any currently available?