In two weeks I will be moving from New Jersey to North Carolina with my two cats. It is a 10 hour drive and my mother is going to be helping me move down there. We are going to be splitting the driving and dont expect to be stopping for more than 10-20 minutes here and there for food and bathroom breaks. My question is, how can I make this easier on my cats? My mom suggested taking them to the vet to get some tranquilizers and fasting them before and during the trip, because they won't have access to a litter box.