Well..The inevitable happened..6 days after delivery, driving N880 near the Tesla plant, a rock flew into the panoramic windshield and created a nice divot and 1/8 crack. I called my insurance and we had safelite repair it....I've never had a windshield repaired, but it was unnerving seeing the technician get a diamond point scribe open a larger hole which could subsequently be pressure sealed with epoxy with this clever device they've constructed. Althought they said the success rate varied...it worked on my vehicle and although I can still see a small blemish (and probably only I can tell where it is), it is supposed to eliminate any crack propogation. This got me thinking though...what if the windshield required replacement? Are there spare parts? would they pull a windshield from the production line potentially reducing delivery output? I've posed these questions to my service center and am waiting for a reply....