Headlights and glasses are strangely clean too.
I wonder if in the final build we will be able to use wipers AND the washer to clean dirt from the windshield.
When in cockpit view, the weather trailer showed snow accumulating in the windshield, no? (err, kind of "same thing")
Maybe it got the same limitation\unfinished state as rain and damage (lack of droplets and headlights\glass not "shattering").