How often do the truck drivers see nude passangers or drivers in other cars?

I'm not a truck driver, but I'm one of the nude guys you might see in the car passing your truck. I wonder, how often do you as a truck driver see nude people in the cars you see on the road? I'm naked as a passenger all the time, are there lots of people like me out on the roads? If so do the truckers warn other truckers on the freeway that a nude passenger is going to pass them up? Do you see more naked guys or naked women in the cars? Are the truck drivers bothered by seeing the naked people in the cars?