This is the situation we have going on now. The technology speedsters are ready to take off and run as fast as the technology will allow. Then you have government plodding along with regulation and standards. Perhaps the government dragging their feet will help the technology folks improve their products before we run over a bunch of kids.
See Sorry, But Driverless Cars Aren't Right Around the Corner for an opinion on the matter. And note that the issue he raises about the computer judgment aspect of programming the computer operating the car for "all situations."