Resting the camera on the dashboard of the car to keep it relatively stable would be a good approach. Then it's just the car's movement and the cars outside that will create the blur and not camera shake. This will have to be experimental as far as shutter speeds and exposure are concerned. Obviously night time would work best if I am going to record light streaks. The camera pointing at back seat and kids with blur outside?
And just to be perfectly clear here. I want to make sure you understand. I didn't leave you. I am trying and almost finished getting the education that is going to free me. It was never that I didn't love you. It's that I have two other people that I love and am responsible for too. If you had cared you would have worked harder to help me.