Is this a professional transport company? Over here I often see requests for volunteers to drive a few hours for transporting long distances. They form a kind of "chain". I imagine the van will stop every few hours for breaks, not only for the animals but for themselves. It's definitely a very long drive, nonetheless. And you never know how a dog/cat is going to do. Joon can't handle more than 15-20 minutes without getting sick. When we made the 90 minute drive from New York to Connecticut I was cleaning up messes coming out of both ends of her. It was a nightmare, poor thing.