Injury with no car damage.
In 1999 State Farm working with the Insurance Institute for Highway Safety set out to show that when there is slight property damage that there is no way for someone’s neck to be injured. They looked into over 32,000 car crashes. They determined how much damage was done to the vehicles and the type of injury if any. The study showed that when cars collide there is energy transferred, and that this energy when not used to damage the car is often transferred to the occupants. They concluded the following: “when property damage was slight neck injuries could occur.”
Farmer, C. M., Wells, J. K., & Werner, J. V. (1999). Relationship of head restraint positioning to driver neck injury in rear-end crashes. Accident Analysis and Prevention,31(6), 719-728.