Thou shalt not insist that thine car has enough gas to ascend a great mountain, despite the fact that the gas beacon is glowing brightly for all to see, only to have thy tank experience a drought of biblical proportions and force thine passengers to walk 12 miles to the nearest petrol station because thine cell phone receives no reception upon the mount.
Thou shalt not put on make-up, shave, or read while driving.
If thou insisteth on having fake Hawaiian leis, Mardi Gras beads and graduation tassles, they shall not occupy more than 10% of you shield of wind.