I am going on a trip with a car following me. I would like to purchase a pair of walkie talkies so we can stay in touch and not have to use cell phones for everything. It will get annoying to dial up wait for them to answer their phone just to say hey you left your blinker on or anyone have to use the restroom? I don't want to spend too much on this because this is its only purpose for road trips like this but want to get ones that would suit this purpose. Anyone know anything about them to help me pick out one that will work.