Hi Jason - with that short of a trip - it doesn't sound like you will have to buy anything special. I would take up their food and water the night before the trip (or part of the day if you are not leaving in the morning) and don't feed them in the car either. This will help them not to get carsick (or need to *go*) while in the car. Just take the litter pan they use already and offer that to them along with food and water as soon as you arrive. Have all these things in the car in case you do get delayed though. For safety, strap the hard carrier into seat belt and have a nice trip!!