I knew a gut that had one years ago who used to call his truckers miles and miles away on one.
I have no idea what he had for a set up.
There are several additional things to consider when using a CB device, including:
You may not raise the power output of a CB transmitter.
You may not attach a "linear," "linear amplifier" or any other type of power amplifier to your CB transmitter.
There are no height restrictions for antennas mounted on vehicles or for hand-held devices.
For structures, the highest point of your antenna must not be more than 20 feet above the highest point of the building or tree on which it is mounted, or 60 feet above the ground. There are lower height limits if your antenna structure is located within two miles of an airport.
You may use an on-the-air pseudonym ("handle") of your choosing.
You must at all times and on all channels, give priority to emergency communications.