Usa Freight Cars Assets mod for Transport Fever.
Default (vanilla) USA Frieght Cars as trackside assets. They are avalible for the same dates as the working cars and are free to place and have no upkeep costs. Note that the cars need to be placed on flat straight track to look good, they do not slope with ground or tracks. They have options to select the visible load in the cars as well as a toggle to select the height off the ground.