Are mobile units permitted in the Family Radio Service?
You can operate your hand-held radio in your car. The only limitation is that it cannot be connected to an external antenna. FRS is a hand-held radio service. So yes, you can drive around talking on your radio. This is one of the most popular modes of operation actually! A car caravan can stay in touch over a reasonable distance. Much better than the old 49MHz radios and with a lot less interference than CB.