FRS, GMRS and MURS don't have much the in way of range. If you are keeping in touch with someone specific they make sense, if you're hoping to find someone, you may find it more challenging.

I have an amateur radio HT in each car -- this presupposes that you can get a ham license, which isn't that hard. The HT's have much better range when there is no repeater in reach and there is an established calling frequency that hams use to contact one another. With a working repeater, you can cover MUCH wider areas (and hams will be easy to find). The HT's are programmed with FRS, GMRS, MURS and some of the more useful Marine VHF frequencies, locked out so that one cannot accidentally transmit on them (the radio is not type-accepted for those services). In a life-threatening emergency the transmit lockout can be removed.

The HTs are also programmed to receive broadcast radio and weather radio frequencies.

Not bad for a radio that costs less than $50.