Yea rural folk will take unkindly to you flying by them and will often burn diesel trying to prove a point. I drive a little 2.0 Awd turbo and I drove from Everett to Kalispell several times on hwy 2 this summer. Had the same kind of thing happen. I’ve definitely experienced some terrible drivers in the stretch you’re talking about tho. I think it comes down to people taking affront you’re passing them. We have a terrible problem with camping the left lane in this state