I hate certain sounds in a car...especially the hollow plastic container sounds. Therefore, I added 1 lbs. of sound insulation to each door, a little to the dash, glovebox, and center armrest. Removed the rear headrests, random plastic, and cargo cover that annoyed me. Yeah, falling rain for a week makes me do nutty things. If this keeps up, I'm dropping headliner and putting in more sound stuff.