Taking your hands off the steering wheel while driving on a busy M11 motorway in Essex at 70mph feels like a counterintuitive leap of faith. When a display flashes blue on the dashboard the moment has come: let go, and the car continues in its lane with no input from feet or hands. The car is a Ford Mustang Mach-E, which has this month become the first to offer hands-free driving capabilities on roads in the UK – a first for the whole of Europe, as well. It is a milestone in the shift to autonomous driving, even if, for...