Call the 626 number. It's the "owner's" cell phone. I believe his name is Scott.Sent a message to Advanced Auto Engineering to see if they offer a product that will protect windshields from rock & stone damage. Their website doesn't show that they have a product for this application.
I am dubious that there is a film product that could be applied to the outside of the windshield. I think it could also affect wiper usage as well.
It is not the car, it is the environment. Here in the Land Of Eternal Construction all my vehicles have always gotten multiple stone chips or worse. Hereabouts dump trucks are ubiquitous and thus there are more dump trucks on the road than smarts. They are everywhere but not getting anywhere else very fast.