The model S is a bit gappy on the fit and finish scale along seams between adjacent body panels. They do a good job where front door trailing edge meets B pillar. But I felt they should have carried out more of this treatment throughout the car. So I filled in the gaps with a weather stripping obtained at Home Depot. This helps: - wind noise - moisture and dirt entry - aerodynamics in a small way - appearance Much more premium look to the car.. take a look!! Here is where A-pillar meets fender: Here is where hood meets fender: Here is where hatch meets rear quarter panel: Here is hatch near tail lights. Look closely and you'll see a double layer thing going on. I used two different materials here because the gap is large. Here is open hatch... You'll notice where I put down a strip of "pickup truck box liner for canopy" or whatever they call it on the quarter panel. And I ran the same weatherstripping as the other places along the hatch door itself. So these material sandwich together when the hatch closes.