I'm about to embark on my second multi-day road trip in August. Once again we are renting a car. I briefly looked at the information on CB's on the site and they look like something a serious road trip guy would want. Would we be able to use a CB in a rental or do we need to have an antennae specifically for the CB? If it's possible to use a CB with a rental, what is the etiquette in speaking on a CB?