Experiment with all of the above by taking the cat on shorter trips to decide. Long enough for it to get settled, about 25 mins? It's old enough that it might explore the car and then go to sleep on a long trip Bring a familiar smelling cloth that it can snooze on. Give a treat but only if it calms down.
If you can avoid it, don't do it. If you're going on vacation, try to find a pet sitter. If you're moving, then I'd try bringing a big comfortable carrier. If you can find someone to go with you, it might be good to have the other person drive so that you can hold and comfort your cat.