When my Mom moved out to California from Michigan. She took her cat with her. He never liked cars. But she called her vet and asked if they could give him some medication that will relax him for the trip. He was unable to take it do to many health problems that could not to be fixed. But if he was a healthy cat they would have given him valume. (I know I spelled that wrong. Sorry.) But it is worth calling your vet to find out if they can give him anything or you any kind of medication to give him for the trip. Just a thought. I hope that helps.
Katie.
P.S. You have such a beatiful cat. Good luck with the move.