To The Guy in the Lexus Driving in Front of Me with Ten Inches of Snow on His Roof and Back Windshield:

You can't see me, because your back windshield is covered with snow, but I would like to inform you that I exist, and also that the snow blowing off your roof is creating a miniature blizzard and obscuring my vision, and though -- besides a small hole in your front windshield -- you've made no attempt to remove any of the snow from your car, I'd like to say that I forgive you, because I have been lazy and inconsiderate at times, and it would be hypocritical for me to feel otherwise.