Like a refrigerator or other large appliance, a parked car is both an inviting and extremely hazardous spot for a game of hide and seek. The engine and wheels add another level of danger, and many children have been pinned or otherwise injured as they try to escape a rolling car after accidentally setting it in motion.
Courts have been reluctant in some cases to rule against the owner of the car (or the owner of the land on which it is parked), reasoning that the car itself poses no unique or unusual danger; instead the danger is created by the deliberate action of a minor child who climbs inside and, in some cases, turns a key. But given the very real potential for serious injury and even death in accidents involving parked or abandoned cars, the best defense is to prevent incidents in the first place. Keep the doors, hatches and trunks of parked cars locked at all times, with windows, sunroofs and convertible tops closed tightly, and instruct children never to play in or around parked cars.