I got a car and i'm been trying to take him places. but I can't because he won't sit down and he barks at everyone. I got a dog seat belt but he broke it because he pulled so hard. so what i'm asking is do anyone knows a good way to time a dog to behave in the car
What kind of seat belt did you use? Did it help to calm him down? Have you tried desensitizing him? (Put him in the car, don't drive, give treats, take him out. Do that a few times before going on very short drives)