I have an Australian shepherd/Australian cattle dog mix (AKA Texas heeler). These dog need a job do do or they will find showing to do that you will not like. As for riding in a car, each dog may or may not like to ride in a vehicle. I do dog rescue so please opt to adopt you will be saving a life! I have met several cattle dogs and they can be great dogs with proper training and care. Like jeeps, do your research for different breeds and don't forget the mutts they can be the best of dogs. If you can get a dog from a group that has a cell dog program (prisoners training the dog) you will get a trained dog. I have found that adopted dog have known the worst and often love having a second chance at loving home. good luck in your search!