The primary purpose of a car is not to kill though. Passenger airliners are not designed to kill either but they do so when operated poorly or when parts fail on them which is why they are heavily regulated. Military planes are designed as weapons and you can buy them on a limited basis but not the armaments and they are also heavily regulated.
Your point is moot... and stupid.
Up to your second paragraph, you were doing quite well keeping the discussion civil. To bad you undermined the veracity of your own argument with a 6 word insult.
You are missing my point, or choosing to ignore it. My point was, and is, that blame and accountability should be assigned to the person responsible for the act, not the object with which the act was committed.
You have also ignored my other comments, which indicate that I am open to having a discussion on improving gun safety. E.g., if we assume that most gun owners are rationale, sane human beings (a fair assumption), then requiring bio-metric identification on all assault weapons would likely achieve the primary goal at issue, i.e., to prevent weapons from functioning when they are stolen by an insane wacko.
As for my comments being moot, well, sure. I raised them in order to spark a discussion (one of the more common meanings of the term "moot.") If you are indicating that my argument lacks practical merit . . . I disagree. Public safety issues abound with numerous things. Cars, planes, trucks, guns, chemicals, etc. Very few of those things are "banned" outright, and only one is written into the U.S. constitution.
Again, your point that guns are designed to kill, whereas cars and other objects have other purposes is well taken. What I don't understand is why it is so difficult for you to even consider that guns and cars pose comparable (note that I did not say the "same") risks, and thus might be subject to the same or similar regulation?