To teach your dog to jump into the car, start by creating a comfortable environment and allowing them to explore the vehicle. Use treats to encourage them to step inside, gradually introducing a command like "car" as they become more confident. Practice getting in and out multiple times, rewarding their efforts, and be patient throughout the process. Once they're comfortable, you can begin taking short car rides to reinforce the behavior. With consistent reinforcement, your dog will learn to jump into the car confidently!