Having an emergency kit in your car is a great idea for day-to-day driving, but it’s pretty much a necessity for long-distance road trips. Basically, if you want a good kit, you’ll have to make it yourself, and we’re here to help. But if you’re going on a road trip across the desert, paying for more range is worthwhile. When you start your car, the starter motor pulls a lot of power from your car battery for a short amount of time. We used the 4-Gallon Aqua-Tainer on our road trip.