If your pet is not accustomed to car travel, take it for a few short rides before your trip. Cats should be confined to a cage or crate to allow them to feel secure and to avoid having a pet under your feet while driving. Stick to your regular feeding routine and give the main meal at the end of the day or when you reach your destination.
Feeding dry food will be more convenient, assuming your pet readily consumes it. Dispose of unused canned food unless it can be refrigerated.