The house closed on June 20th, and about an hour after the movers left (we cleaned the house for the new owners) we got in the JEEP with our two cats, Boulder and Golden, and drove for 22 hours to Boulder. For reference, the drive was only 20 hours in the Audi in March, even with snowstorms, rain and ice. We drove along 80, and left at 8:30 PM PST and got in the next day around 7:30 PM MST.
I must say, the cats settled down significantly, and although I was unable to drug them, (they wouldn’t eat the cat food I ground up the sedative into) they were very good. This may have been because it was a hot drive, so the cats were cooking in the back of our non-air-conditioned JEEP Wrangler TJ. I soaked them periodically with water which they seemed to enjoy.