There are a few bits wrong here. First off, the Midwest is not simply a massive wide open cattle ranching area with little else around. That’s really the Great Plains area, which is partially in the Midwest but also partially in the West and Southwest. The Midwest is not mostly made up of ranchers or farmers. There are definitely some in various parts, but other parts have none at all.

Ohio, Illinois, Indiana, Missouri, Michigan, Wisconsin, and Minnesota are all part of the Midwest, and your summary doesn’t really describe them well at all. I think you may be doing what I see a lot of coastal Americans do which is to confuse the Midwest with the West or the Southwest because the names are much less intuitive than they seem. These terms rose to prominence in the 19th century before “manifest destiny” colonized the entire continent, so they’re all incredibly East coast-centric. The Midwest is in the mideast, the South is in the southeast, the Southwest is in the south, and the West is the whole western half of the country.

And while cola for breakfast might seem a bit off even to most Americans, it’s not at all uncommon in the Midwest, but what’s weird is that it’s Pepsi in this ad because almost all prefer coke in the Midwest. When I moved out of the Midwest, it took me a while to break the disgusting coke for breakfast habit, but it definitely rings true to me to be characteristic of a Midwest breakfast.

Also, this looks like a regular sized gas station anywhere in the central US. It’s definitely not an area for truckers to fill up their big rigs because there is clearly unleaded at those pumps.

And to back it all up, here is the location map for Casey’s (that made this ad) where it’s clear that they are mostly in the Midwest states I mentioned as well as the Great Plains Midwest states of the Dakotas, Nebraska, and Kansas.