Am I the only one surprised that it took crazy people this long to figure this out? As weird as it sounds, I'm pretty sure I've thought of the possibility of this a long time ago. It's really not that hard to kill a lot of people, be it by driving into them or otherwise. It's incredibly easy to walk into a crowded place and just open fire like happened in France and Orlando and Istanbul. Thank God crazy people are usually idiots and there aren't that many of them...