My cousin in Salt Lake would complain about the slower, bigger, and more full of kids in the SUV, the more likely they are to stay in the passing lane.
The Utah County part strikes me as odd. They’re like my go-to mnemonic/metonym when I want to imagine a US county that values non-individialism and social cohesion no matter the emotional cost. Maybe they value social cohesion and bumper-to-bumper cohesion equally. Hmm.