I have seen a few cars that fit right in that description (all three of my daughters). I've tried to impress upon them the value of clean vehicles, and they do a reasonable job of cleaning the exterior, but lack in cleaning the inside. Me, as soon as I get back from a trip, I clean the trash out (actually do it every time we stop) and then vacuum up any junk that is left. One daughter will do a semi-thorough job once a month or so. I'm finally getting to her.