You wouldn’t want your anesthetist or surgeon yammering or texting on their phone while doing your open heart surgery, and you wouldn’t want your pilot doing it while your plane is ready for takeoff. Why would you do it while driving an SUV in someone’s direction at 60 mph? It can be just as dangerous for you, and can kill you just as dead.
Couple of good bumper stickers; “Just put down the phone and no one will get hurt” and “Honk if you love Jesus. Text me if you want to meet Jesus soon.”