I used to have a portable CB that plugged into the cigarette lighter and had a magnetic antenna to put on the roof of the car. It was my grandmother's, for use in case of emergency, and when she gave me her car, I got the CB, too. During the time that I had this CB, I was driving around 30,000 miles a year.
It was definitely useful for long trips, for
- information about traffic road conditions
- warnings about speed enforcement, accidents, and other police activity
I only spoke on the radio once, when my car was stuck in the snow during a blizzard. But listening to the truckers definitely helped pass the time during long drives. It was very entertaining -- there are lots of interesting characters. In fact, it was not unlike the internet in that regard.
I particularly remember one young-sounding trucker who was gleefully warning everyone about a speed trap that he had passed 200 miles back. Everyone else was pointing out to him that by the time anyone hearing his announcement got to that point, it would be 6 hours after he had been there, and the cops would likely have moved on.