Preparing for a Road Trip

I made a one day road trip last week…4 hours in the car. That isn’t much of trek but it has prompted me to think about the generic process of preparation. Here’s my quick checklist:

• Car in good working condition?
• Gas tank full?
• Umbrella in car (in case it rains unexpectedly)?
• Sunglasses?
• Snacks and water ready for the cooler?
• Addresses for destination (to enter into the nav system/Garmin)?
• AAA card (in case something does go wrong with the car)?
• Insurance card and registration (in case of an accident)?
• Any time constraints (have to be at destination by a certain time) factored in to departure time?
• Cargo secured in trunk or, if it won’t all fit in the trunk, in the back seat?
• Layers of clothing appropriate for the likely weather conditions?
• Sleeping bag (if winter and driving in bad weather)?

Any suggestions for addtions to this list?