I can't speak to that specific example, because I'm unfamiliar with the US highway system, but plenty of people got lost in the bad old days. At the very least, if you missed a turnoff, you would have to re-anchor yourself on a map. Some people can do that quite easily. Other people cannot do it at all.

Keep in mind, the lost husband buried in maps was a common joke in those days. Also, in the early days of GPS, someone getting lost by following the directions on their phone, was also a common news story. (Presumably these people would still have had situational awareness/direction from using maps in the past.)

As for the shirtless Kentuckian, you're probably right. That said, I've found motorists skittish when I ask them for directions or when checking to see if they need help. I've always chalked that up to being part of car culture.