Not so much a question of “friendlier” but a question of personal interest.
If I encountered your camper cruising down a Texas highway with a “BIG HEAD FRED” bumper sticker I’m not sure if I would try to stop you.
I would more than likely swerve into your path, just to get your attention and test your reaction.
yowee if i was in a camper in texas the bumper sticker would say just kill me now no seriously if i was in a camper in texas i hope you would notice me because i had been abducted by aliens and was in desperate need of succor