There are several of those, none of which seem to be beyond the demo level. Navya is really slow, about walking speed. EasyMile is so slow they have to show sped-up videos. Proterra, which makes electric buses, is just talking about self-driving. Olli, from Local Motors, is starting out at 5MPH and doesn't seem to have any units installed.

None of these systems seem capable of an ordinary airport parking shuttle route. That's embarrassing. Those things should be performing better.