https://www.theguardian.com/technology/2018/mar/25/driverless-cars-autonomous-vehicles-science-technology-tapper

How many people does it take to drive a driverless car? Five: a safety driver behind the wheel, an operator to program the route, and three engineers monitoring it in another car behind.

It is, to be fair, barely even a prototype. The autonomous car unveiled in Milton Keynes last week is bleeding-edge engineering, Britain’s entry in a global race to get the first driverless car on the road.