I used to carry around a hand-held CB clipped to my camel-bak straps while riding, and I would listen to the truckers while I was doing some short touring, "Look out for the bike going southbound here on Highway 150." Lol. Other than this eavesdropping, all I have heard from passersby is the standard, "Get on the sidewalk," "Get off the road," and "Go, Lance Armstrong!"