Where do you keep the cat litter box?

Dogs only around here, but MHO is that cats should ride in a carrier in the vehicle. Anyone who comes into our vet's office without the cat carrier gets a serious talking-to about how they can get spooked and be gone in a flash.

If we had a cat, there is no good place in our TT since it has a glass enclosure and the only/last choice would be sitting in front of the refrig.