People should have the right to do whatever the heck they want with their property. While these "lawmakers" are at it, they should ban all of the voice-enabled cars and force people to text and hold the phone while driving. I was driving down the road in an unfamiliar place with my iPhone and Google Maps in my lap, looking at it every now and then, and I noticed that after looking for a second I was usually half a fo…
If you cannot comfortably see the map while driving: stop, memorise fragment, then drive. Where you cannot stop, road signs are usually available. Most automatic assistants in cars say the instructions out loud exactly so that you don't have to look at the screen.
New cars already display that kind of information on HUDs. They're usually minimal, so that you do no see the whole map.
(PS. Please do not drive with a phone in your lap. This is extremely dangerous. Just stop and find your way.)