My experience with people with dirty cars - they tend to use them only as transportation. Their living room isn't necessarily nearly as dirty (though just about NEVER clean). But their bathrooms are horrendous. Never use the bathroom of someone with a dirty car.
You can tell what possessions are part of a person's identity by how they maintain them.
I'm always confused when I see cars with a bunch of expensive non-functional aftermarket accessories on their car. Like, why would you spend money on that? Then I remember that for me, my car isn't really part of my "self", but for others it is.
