Since your Labrador may sometimes accompany you when you travel, it is important to indoctrinate it into riding in the car while it is still a puppy. Start with short trips, such as local errands, and increase from there.

The dog should always ride in the back seat and should be taught to lie down while the car is moving. Young puppies often do well to ride in their crates during any extended car trip.

For trips of more than an hour, do not feed the dog just prior to departure. Like people, many dogs experience motion sickness. Should your dog be prone to vomiting in the car, it will require medication from your veterinarian whenever you are planning a long drive.

Most dogs outgrow this as they get more accustomed to car trips. Plan on stopping at least every two hours, at which time you should walk the dog to give it some exercise and a chance to relieve itself. Remember that the dog will be in an unfamiliar terrain, so always have it on leash to prevent an unexpected bolting.   More detail...