On long car trips in the U.S., I didn’t really find the prospect of using a highway rest stop bathroom significantly more appealing than just holding it until I got to my destination, whether that meant waiting until the next city or the next state. Honestly, given how filthy a lot of the public toilets were, I was generally happier with a deserted stretch of road or a grove of trees I could pull over near.
In Japan, though, it’s a different story, as this video of a rest stop bathroom shows it to be cleaner and classier than the one in many people’s homes.