Alon,
Does it say "Sekurit" on your new windshield? My new windshield is supposed to have been OEM MB glass but the only markings I see are the MB tristar with "PPG" plus some other numberings on the driver side at the bottom. I looked at my rear glass and it has "Sekurit" clearly etched on.
What's burning me up now is the thought that it could have been vandalism because this happened on the GCP where there are no trucks. The car in front of me was a Bimmer and I thought that what had hit my windshield was something that was flipped out of the car. The recollection just surfaced as I was talking to someone about and he mentioned that some idiots on the highway actually do this for kicks.