My husbands job is about to be split between two separate Provinces in the Maritimes of Canada. It will be 6 months in one and 6 months in another. My 3 senior cats (ages 18,16,14) have never travelled except very occasional vet trips. The drive is about 6 hours, how can I make this easiest for them? I feel 6 hours is a long time to be in a carrier so I thought about a large dog crate in my SUV with a small litter box? The cats get along fairly well but I don’t know what would happen if they were forced together on a scary car ride. Anyone have experience with this? It’s something that will have to happen twice a year every year so I have to figure it out