I think gp is referring to the number of screens on the inside of the vehicle, and how basically everything we do now revolves around a touch screen.

Besides, I don't see how this will ever be cheaper than a 2010 prius being driven by some guy. The equipment in this machine will easily cost six figures, and the software will be a constant engineering expense, whereas the traditional taxi is just $50k for the vehicle, another $10-20k for the license (more in large cities), and then you just get a guy to drive it. Maybe economies of scale will drive the price down, but the guy driving the cab has never been the cost center.