Do to changing circumstances, my wife and I have to take both of our cats camping with us. Once set up both are great campers. The problem is the traveling. Penny can usually calm down and endure the drive. Sheba cannot calm down and settle down. She is all over the truck and gets car sick. I realize that leaving them in the trailer while traveling is not an option, but we don't want to quit camping either. Help, I am open to suggestions..