To be fair, pretty much the entire drive between Winnipeg and Calgary is flat, lifeless, and an overall snooze-fest. There's a bit around Swift Current that is interesting, and the valley around Brandon has a few minutes of charm, but that's about it.
I just focussed on a part that was in Alberta, as I've already seen what happens when you dare to point out that the prairie in SK or MB is anything but exciting.
Mostly though, it comes at the end of a long, boring drive (when heading west), and just when you think you're close (hey, the 'Hat is right next to Calgary comparitively!), you're forced to endure another 2.5 hours of dull.