I actually am interested in radio.
You'd be better off getting into ham radio then. 40 channel AM CB you're not going to find much except truckers. Some areas have a population of regular CB users. You can spot the antennas on the cars or pickup trucks and on people's houses. Verticals are popular, and cubical quads are popular directional CB antennas. Some of these could actually be ham antennas to the untrained eye. You'll mostly hear stuff within a few miles around depending on how good your antenna is. "Skip" or hearing/talking long distances on CB isn't happening very much right now due to the solar cycle. Wait 3 or 4 years and the skip will be rolling in. Things should be noticeably better in a year or two. The 40 channels using AM aren't the best to work skip on. Typically when radio conditions permit, there are so many stations bouncing off the ionosphere that you just hear (or see on the meter) the noise floor rise and you can occaisionally pick out a station here and there, like ones running huge amplifiers. Sideband is where it's at, more specifically the freeband which is the areas above channel 40 and below channel 1. I recall hearing stations on 27.705 LSB a lot a few years back. Oh, to transmit anywhere outside the CB band (below 1 and above 40) is illegal. Transmitting more than 5 watts input (I think that's right) is illegal. However, you will find many radios that can easily break both of those rules. Just go to any truck stop and you'll find them.
As I mentioned earlier, if you're really interested in radio you should study and get a ham licence. Hams can legally operate 1500 watts on most frequencies in the US and you get a heck of a lot more than half a MHz to work with. Even when the solar cycle is down there's frequencies that'll get out on ham. You can talk around the world no problem.
I wonder how many morons actually tried that shit.
A lot. You'd be surprised.