Depends on what traffic is like on your routes. Here in the Northeast going southbound, then back northbound on I95 can be challenging. I have put it in park, turned the key off and played frisbee with my daughter when an accident closed the interstate down for miles and there was no where for any of us to go. I now use a CB for that route and its mostly quiet on 19 until something is up. The truckers start talking about problems and workarounds. It has saved us many what could be miserable hours sitting in jams.
So I cant speak to the rest of the country or even westbound, but I have been up and down I95 for 11 years and its part of my setup when I go that way.
Happy Trails