I would argue that cars once moving do pose an intrinsic danger. Driving is really dangerous, you are basically driving a mobile weapon. And not just dangerous for you but for your surroundings, similar to firearms. Sure, its always a question of how they are handled, but if you own a gun or drive a car, you are, at least at some level, a danger to your environment. Even if its just a driver having a stroke and crashing into a crowd or a gun owner having a muscle spasm at the wrong time.