I'll tell you my worries about the hatch area on these Volts. If you look at the "paint" in the valley between the rear glass and the hatch frame, it is rough, at least on mine. Doesn't appear the robot got any clearcoat down there. Every time I wash mine, I make sure to wipe out around here, and also, under the top of the hatch by the roof. Debris accumulating here, and breaking down, with the half-ass paint protecting the area under the glass is a recipe for rust, and certainly, seal failure. Not sure but the "seal" seems to be some sort of adhesive/caulking, not a true rubber seal. Recipe for disaster. I bought a rubber cargo mat; you might as well. Also should be noted clearcoat has failed on my roof and hatch (failed at the 5 year mark last fall) to the point that even GM has offered to repaint it for a small deductible.