Tranquila-it will work out just fine. The cat is being indoctrinated even now-he was served a breakfast of Friskies on the deck, and the dog conned him into playing. When the time comes, the cat will be glad to get into my 4x4 with the others to go to our new destination...
We found that it is easier to take the cats to the vet (very rare occurance thankfully) if we let them jump in the car and hang out in there pretty often. Or hub even drives them around the circle driveway (big one). To ease their nervousness about car rides.
I hope you live a distance from the old place!
People like the ones you describe should never have animals!!
grrr