I've made plenty of Chicago to Santa Fe drives, so can suggest a few options that take you as far as Brush, CO, though mostly I've just sought coffee that rises above the level of Beverine.
Heading west on 80, at exit 242 in Iowa, good coffee at
High Ground Cafe, a half mile off 80. Next stop, on University Ave in West Des Moines,
5 Borough Bagels has one of the few edible bagels between Chicago and LA. Coffee's OK, too. I had the Lox Deluxe last week and stayed in a LaQuinta a few blocks away. At exit 54, a bit of a detour 6 miles north of 80 to Elk Horn:
Coffee Girl has good coffee and sandwiches, plus there's a windmill across the street (a few miles north is The Little Mermaid statue in Kimballton: just sayin'). Though it wasn't open when I was there three weeks ago, I plan to try
The Danish Table in Elk Horn on my next trip. At exit 403 in Nebraska, if it's lunchtime in Lincoln, I stop at King Kong Burger. Not sure if it's the burger, the gyros, or the giant King Kong statue on the roof that pulls me in (coffee sux). If you're craving Thaimerican, there's Suwannee Thai in Kearney, NE (the exit after the $20 mil Kearney Archway hellscape, which celebrates plucky American hucksterism and bond defaults, I'm guessing). I got nothing more until Sterling, CO, where I've spent many nights in the Best Western Sundowner, which takes dogs (and lots of them during hunting season). The rest of the town isn't much to look at, though there are plenty of liquor stores. Further on 76 at Brush, CO,
Drovers Restaurant is good and you can gas up at either the Cenex (nota bene, homonymous with the Latin for "old geezer") a few blocks west or a Shell station on Route 71 on the north side of 76.