Guys guys guys, my high school has a Harry Potter club and they have duels in the hallways between classes and they have to react to the spell and they're having a Yule Ball and their going to act out the Battle of Hogwarts and can I just go already I just. GAH.
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?