Originally Posted by tmnCA
I think the dealers are putting a coat of sealer or something on the car exteriors, the water beaded and ran off my windshield in a rain storm before I ever washed or waxed it myself. It could be just marks in the wax/sealer that they put on. I highly doubt your plastic scraper could mar glass.
New materials always shed water better than weathered materials. I have worked at a few dealers and, not once was something put on with out, it being bought at the time of sale.
Glass does scratch easily, just look at the marks wipers put into it.