This is the point that I see everyone discounting. Whether autonomous cars turn out to be feasible or not, we know for a fact that humans are bad drivers. Don't we owe it to ourselves to try something different?

There's a nice analogy with fighter jets taking off from aircraft carriers. They have handlebars in the top of the cabin that the pilots are required to grab during take off. Experience had shown that, when they took off with their hands in the steering stick, the acceleration was so high that they'd react by pushing the stick, plunging the plane into the ocean.