Turns out that not securing an old five gallon bucket of latex paint in the back of my car wasn't such a good idea after having to brake and having it tip and spill about a half-gallon worth all over the back seat and floor, plus the console. (Note to self: don't count on the lid being tight.) What a mess. Three hours later and it's still not clean but at least my car isn't a paint container anymore. Mostly. Will have to look into what can remove paint stains now, or just get an old t-shirt and cover the back seat that got hit. Oh well.