I did two 2,000 mile round trips on our Libby in the past 12 months with no problem. Here is what I carried with me on my road trip:
1. Portable jump starter just in case that has a built in aircompressor and 110 VAC so I can charge my cell phone while I drive.
2. Tow rope to help the less fortunate in a snow storm.
3. Container of Power Service or your favorite fuel additive
4. Tire plug kit to repair plug flats. All my vehicles have a tire plug kit in the trunk. I rather plug a tire than have to put on a spare. DIY plug is just as effective as the tire flat repair at a tire store.
http://www.amazon.com/Time-Flat-Emergen ... B0006GSL6I
5. ATM Card/ Credit Car/ and at least 100 bucks in cash for emergency. There are places in the middle of no where that won't accept credit cars for fuel and having cash helps a bunch particularly if ATMs is down or not available.
6. 1 quart of replacment oil
7. 1 gallon of distilled water. Can be used in as drinking water in emergency and to top off radiator too.
8. Cheap 5 dollar toolkit form Walmart. You never know when you might need to use it for.
9. Cheap styrofoam cooler for drinks and food. Buying cokes in bulk before your trip will save your money.
10. Food, blankets, flare gun, handgun, signalling mirror, flash light, cell phone, satellite phone, night vision goggles, and of course hitch hiker bumper sticker that reads "booty, gas, or grass, no one rides for free....