Thanks everybody. I was amazed at how well they took the ride myself. I figured it would be better than a car ride because the motorhome is just so much bigger. Tubby even jumped down a few times and headed to the back to the litter box. He didn't get into the litter box because I had the shower door closed for travel, but navigated really well while we were moving. Much better than I do while we're moving. Guess that comes from having 4 on the floor instead of 2.