Taxi?

There is a revolution going on that is going to change the face of transport in and around cities in a way that no other has in the last century.  The starting point is that humble taxi that you cannot always find when you need it most —  that is to say a rolling metal box with rubber tires, a human being at the wheel, and some kind of engine propelling it along, with or without human cargo.   But this thing, this taxi as it is called, is in the process of being reinvented as a rolling, pliant always-on 21st century information system.  And of course we are looking into this closely in the pages of World Streets.