Even though I'm not the one who owns the LS430 at our house, (it's my dad's car, and I'm not of age to have a car yet :( ) I can say that I'm probably more OCD about it than he is, go figure, huh. He's willing to let it remain dirty for quite some time, and usually I'm the one who ends up washing it, though he helps, but his eyesight isn't the best, so I usually touch up missed spots. Luckily, the few passengers that ever do ride in the LS seem to respect it, they usually just sit and look out the window without fiddling with the buttons. :)