Wear driving slippers or comfortable shoes whether you’re the driver or passenger.
Use sun block with an SPF of at least 30. Sun rays have the ability to penetrate glass.
Dress in layers for a car trip. It may be chilly in the morning but can get hot by late afternoon. Dressing in layers will eliminate the need to go searching through your luggage once you’re on the road.
Bring along a small cooler with bottled water and healthy snacks. It will keep you from being tempted by the bright lights of the fast food restaurants you’re driving past.