I have a 12yr old cat that we are going to be moving from MN to AZ. He has only been to the vet once and that was when he was a kitten(I know bad). So he is not that used to the car. We did move before from IL to MN but it was only a 6hrs drive and he did howl quite a bit. We are thinking to try and make the drive in one trip with no stops at a hotel so we can keep him in the crate. The crate we have is a large dog crate that we used in the 1st move. My question, what tips do you have to keep him clam for such a long car ride 24hrs , and I really dont want to let him out of the crate until we arrive at our destation, is that a bad thing?