Yes, CB still works, but it is not the value it once was. My coax got damaged and I have not bothered to replace it.
If you are going to count on a cellphone for much, look at the coverage map of where you are going and decide if you don't want a repeater or booster. Even with a three watt repeater, we are often out of coverage in Montana and the Dakotas and many other western states. This makes Google maps or Waze hard to count on.
We also have FRS radios that we use when traveling in convoy. They work and are simpler than cell because they are a party line.
Matt