i bet they won't do it and haven't done it - IIRC it was removed as "it didn't work"
besides, use something like ombrello or rain-x and it works wonders. clean, rub on with a microfibre cloth, dampen and wipe off; rub on, wet and wipe off again. stays in place beautifully on the rear screen. my side windows are also still okay nearly a year on (but then the car's been washed probably 3 times since then...) and the rear's great. shame the snow piles up in the middle, especially the powdery stuff, but we can't have everything.
Bret
-+-+-+-+-+-+-+-+-+-+-+-+-
2002, Petrol 1.4, 17" 215/40 summer, 185/55R15 spiked winter, OpenSky, leather / alcantara in iceblue; added by me: cruise, LEDs in the doors and mirrors; Ambient lighting, Day-Driving lights, Fogs, Comet FF200s... coming soon: heated seats and MFwheel, TT Tacho and pointers, Xenon... and more.
http://www.a2-freun.de/gallery/thumbnails.php?album=61
-+-+-+-+-+-+-+-+-+-+-+-+-