The crucial difference being, of course, that the intended use of a car is not to kill people in a drunk driving accident, whereas the primary purpose of a gun

The crucial difference being, of course, that the intended use of a car is not to kill people in a drunk driving accident, whereas the primary purpose of a gun _is_ to kill people by shooting them. Not saying it's necessarily right to sue the manufacturer based on the crimes of the users, but let's not pretend there's no difference.