That doesn't necessarily reply to my comment though. My point was about purposefully planning/executing mass killings by car vs. by gun. I am certain some crazies will try and do it, but the majority won't when they can simply use a gun.
Mind you, I didn't mention removing guns from the majority as I honestly don't know if this would solve the problem. It might or might not, I really don't know, but I do know that something, somewhere has got to give.