As Latter-Day Saints we are supposed to honor, uphold and sustain the law. That is one of our Articles of Faith. We can hardly say that we will be Latter-Day Saints when we are out of a car and forget the rule of our religion when we are in a car.
If we are Latter-Day Saints, we should be Latter-Day Saints all the time, whether in a car, or on the football field, on the basketball floor, in the classroom, or in our own homes. Our religion is for all the time.