Comment by wtdo

Maybe. But it also seriously helps to avoid being distracted. I live in Seattle and drive to my parents house in Vegas, almost always driving I-90 -> I-82 -> I-84 -> I-15. Washington is great. Hardly any billboards. Oregon and Idaho are about the same. Driving through Utah is awful. Billboards everywhere some of them are brightly lit and flashing. I feel much more distracted by them.