> Pick pretty much any random 100 mile stretch of I-70 or I-80 between the Appalachians and the Rockies
Having recently (and historically many times before that) drove both I-70 and I-80 in the area indicated, I feel you’re being a bit hyperbolic. I’d agree both are as described for some 100 mile stretches (I-70 between Hays / Salina KS and I-80 between Lincoln / Grand Island NE as two examples), but not any random section.
As someone who lives in the midwest, I have to disagree. Pick pretty much any random 100 mile stretch of I-70 or I-80 between the Appalachians and the Rockies and the majority of it will be straight enough that you could set the cruise and only have to turn the wheel a few degrees at most as long as traffic doesn't do anything stupid.
When I was younger and dumber I once drove from I-71 near Cleveland almost to Chicago with just my knee on the wheel. There's a kink about half way across Indiana that was the only real challenge.