Question: At what point does an item (any item) go from tool to weapon?
Your car is a tool, or in JP's case, a toy. If you plowed into a group of people, it would be described as a weapon.
A hammer is a tool. If some psycho uses it to bash someone's head in it becomes a weapon.
In some instances a firearm is a tool. It can be used to create food or clothing, or used in a competitive sport. If it's turned on a person it becomes a weapon.
Some of you in this thread are in complete denial. If you are sooooo in denial that an econo-box traveling at 200mph could become a weapon, do us all a favor and step away from this issue. Who here recalls a certain GTO drive that resulted in the tragic death of several people? Now, tell me again they aren't comparable.