Now we actually have working software and hardware, and real people are experiencing self driving. I live in the bay area, but not a month goes by that I don't see a self driving vehicle at some point. And that's not counting the Teslas that are autopiloting their way down the highway next to me that I don't even know about.
Maybe my negative feelings are excessive; I'm just really, really tired of having people jump in with the whole "but self-driving cars will change everything!!!" routine every time people try to have a serious conversation about public transit investment.
And also there is Uber's self driving fleet. They are actually taking people from place to place who use the Uber app in a self driving vehicle.
In all cases someone is still at the wheel, but they aren't doing anything other than monitoring and logging the ride and cases where the car didn't behave like a "normal" driver.
There are already autonomous Ubers taking people around Philadelphia and now San Francisco.
What limits do you think will exist?