Well, all of the new Ethanol cars a bogus... :
Four of the six cars are built by Trinity, one was built by ACF. Crack open the .pdf artwork and look at the built dates of these things. Athearn claims that in their features that these tank cars are for "2005-Now", meanwhile, the ACF one is listed as '93, the CHS as '99 and the DODX as '70! All of these paint schemes are COMPLETELY bogus for this car! Is Athearn becoming the next Micro-Trains when it comes to "close enough"?
I imagine if a company made a model of a certain tankcar and only applied the schemes it actually wore in real life, they'd probably only be able to do a few schemes and might not recoup their investment, let alone make a profit. Aren't most tankcars built in very small batches for a specific commodity, with series sometimes only numbering a dozen cars or so? Tankers aren't something as simple as a 50' boxcar, they're highly-specialized with very subtle differences. I also bet Athearn is taking advantage of the fact that most consumers aren't knowledgeable about tankcar variations.
Also, this scale doesn't have nearly enough quality tankcar models, so I personally am willing to give manufacturers a little leeway, especially when the model is as nice as the Athearn ethanol tanker.