We take our cats along with no problems except during the first half hour when they are very vocal. They don't like traveling, but are okay when we get there, expecially during the winter month when we go somewhere warm and the windows can be open. No slides, so no problems there. And they both run away from the door when you open it. They are very content indoor cats.
If anyone knows where to find a battery powered cat fountain, please post a link!!! We don't take along their drinkwell fountain, and they miss it! They are spoiled and prefer running water to drink.