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?
— “...Most runners run not because they want to live longer, but because they want to live life to the fullest. If you're going to while away the years, it's far better to live them with clear goals and fully alive then in a fog, and I believe running helps you to do that. Exerting yourself to the fullest within your individual limits: that's the essence of running, and a metaphor for life...” ― Haruki Murakami
I have chosen this image because I like how light has been used to create the effect that the person in the image is interacting with the light. This effect would've been achieved by simply taking this image at a ling shutter speed, have the woman pose her hands and then using a torch, draw this cool blue pattern within her hands.