I'd like to take this time to remind you to have your car looked over by your local mechanic in preparation for winter (For those who live in LA, Arizona and the like, isn't it time you changed your oil anyway?). One thing I'm especially concerned about, in the areas where winter is a reality, are your tires. Have them looked at before it snows. If there's any doubt, get new ones.
A few links:
My post on tires.
Gord's post on winterizing your vehicle.
Gord's post on getting small engines in shape for the cold weather.
Be ready for winter driving. It could save you money and your life.