Could you add a little more detail? What kind of car DVD is it? I would like to know. But if it doesn't have an option, it's okay. It doesn't need to. Purchase some wireless headphones and turn on your car DVD with a movie playing. After its been playing for a while and this doesn't work, then that means that there is no headphone option. But I'm sure that if you'd mention a little more detail, someone could answer this question, including me. I hope your car DVD problem has a solution. Good luck!