Mark, Even when a person tries through the choice of words, they often fail on typed responses such as found in this forum to convey their opinions where as if we had a face-to-face conversation, the tone of my voice, body language, and certainly facial expressions would add as much to the message as the words. Well, of course AC doesn't add any safety value to a KF car and if someone did have a CB radio in a KF car, it would be 99 44/100% likely to be a solid state 12V unit from 1975 or later. I have seen several setups that were run off of small 12V batteries such as used in lawn equipment. In which case, it would be portable and affect judging about as much as an extra pillow for your rump.