Not sure what you're worried about; all you need to break in is a lightly thrown metal ball.
While you obviously don't want to test it, there are videos of Model 3's and Model S's being driven through water over the windshield and were fine. IIRC there's a video somewhere of one of the Tesla models actually floating when the water got too deep.
Hope they don't use something like this 3M polymer layer, because it means you will be trapped for 2 more minutes even if you have the tools to go trough the polymer.