Actually, self-driving cars are the only proposed solution to automobile accidents and related deaths that seems like it might work. Laws don't work, education doesn't work, and even the safest, most careful drivers can and do have accidents. Let's be clear. In the US, at least, cars are not going anywhere unless costs become as prohibitive everywhere as they are in NYC. Even then, they're still not going anywhere (NYC still has a ton of cars obviously). I have no idea what making communities smarter means. What exactly are you proposing?