I will recommend, if you have some time next time, to get off at highway 2 in grand island and take the sand hills highway. The platte river valley is just one long corn field , broken up only by soy fields. But that field extends from Colorado to Chicago, so that you'd hate nebraska specifically, and not Iowa is strange to me. However, once you get north of the Platte river valley on highway 2, it's actually a rather lovely drive, rolling hills and absolutely no one is on the road, so you can really fly. I took it for the first time on my way to Alliance for the Eclipse and it was a delight.
The people, however, in the places I stopped along that highway, were an absolute nightmare. There was this one small town that had no business district, but it did have a house, painted hazard orange and black, that said "Guns, Ammo and Silencers" I didn't even know silencers were legal at the time. This was in the absolute middle of no where, it was shocking to me. Made me wonder if there was like a John Wick-style assassin community living out in the sandhills.