40 hour Road-Trip, oh help us.?

The cooler is a great idea, a car full of whiny kids is no fun for them OR YOU. Pack blankets as well so your kids can cuddle up and snooze too. As for less clutter, be sure each kid (aside from the baby) has a small backpack or ditty bag that they can keep their gear in (the good is two fold your kids learn to clean up after themselves and they car stays cleaner). Also take some trash bags that yogurt cups, fruit rinds, and candy rappers can go into and be thrown away along the way.