One fatality in 130M miles, as opposed to driver'd driving, 1 per 90M miles.
http://www.theverge.com/2016/6/30/12072408/tesla-autopilot-car-crash-death-autonomous-model-s
As these get ironed out, we'll be that much closer to widespread driverless vehicle usage.
There are a lot of details to take into account. For starters, Tesla always explicitly stated it's not ready to be fuly autonomous yet. You're supposed to keep your hands on the wheel.
Well, whatever the arguments, it's sad for the driver. If autonomous cars end up killing less people per year than manual driving, it's a win.
Saw a thing at RSA about this, and we should expect a small hike in fatalities as we adopt the technology before it delivers on major safety improvements. The same thing happened with seat belts and airbags.