I should mention - these are models of steam-era tank cars (the bulk of which were built in the 1920's, and virtually scrapped out by the 1980's) with MODERN-DAY markings on them. Totally UNprototypical, based on the markings. But nothing that a good set of decals and a repaint wouldn't take care of.
They indeed may be unprototypical, but not everyone in the hobby has the layout size to allow full scale prototypical cars to be run on a layout. So my personal approach with the repaint and decals is to come forward in time, not go backwards. Much like what Menards did with this particular tank car being discussed: To make something appear to be more contemporary or modern, albeit as in a "representation" instead of a precision scale proportioned model.
Kind of ironic so many comments are made about prototypical fidelity here on here on the traditional forum. Even by the admission of Lionel, although the high end stuff garners all the excitement and conversation, it is still the traditional starter set line that keeps Lionel in business.
As with many of the Menards cars, the following below, are also unprototypical: Wrong tank car body, wrong style caboose body, box car with full side ladders and roof walk - and all undersized. Oh, and like many Menards cars, my CSX boxcar is the wrong shade of blue... but I did that intentionally.
So I work with what I have to work with, which the real railroads often have to do to remain profitable. By that thinking, maybe I'm a little more "prototypical" than I realize.
Were it not for the traditional line of trains, I'd have no other option but to go to HO or N scale. Which, if truth be told, is the inspiration for the contemporary scale line offerings of 3-rail trains: To keep 3-rail customers from switching to HO or N scale.
And if the whole 3-rail hobby was prototypical precise scale sales driven, I highly doubt the Menards rolling stock would be doing as well as it appears to be doing. Even most of the Menards buildings have a smaller foot print, because MOST people don't have the space on their layouts for large, accurately proportioned structures.