Don't know. What do you think?
Well... Personally, I like the Waste Transport cars, and the possibilities for new handling facilities to go along with them.
The cars handle (from what I'm reading) soils from remediation projects, "benzene, toluene, ethyl benzene, xylene, select polynuclear hydrocarbons, sulfide and cyanide. The cleanup involves excavating the contaminated soil to a maximum depth of 14 feet, state officials have said." Quoted from this site, that discusses those cars in NY state.
Rail car mystery solved in Geneva
You'd probably have to email the MFG for truck/bogey specs and drawings, and ask for info/drawings on the proprietary undercarriage.
EDIT: I found a page on the Heritage site that discusses the railcar >>>
Specialty Intermodal Cars. These cars are articulated like some of the TTX/wellcars.
"
ABC Cars:
The articulated bulk container car (ABC) is a lightweight, articulated spine-type car designed to carry materials in 20- or 40- foot containers; optimal configuration is for 20’ x 5’ containers (double stacked on the ends). The high GRL is appealing given the dense commodities typically hauled in the containers." There are also a few other MFG's of these cars and the containers.
I found a pic of the road trucks and trailers used at the transfer points. Modeling the trailer would be great as well.
The gondola also looks interesting. What I'm finding is that there are high-capacity versions, for low-density cargo like woodchips, and the high side versions (they look identical on the outside) for high density loads.
Click on the Mill and Woodchip links on this page >>>
Gondola Railcars You Can Rely On