This month is a bit different. This episode is the first part of an investigation, led by Jack, into self-driving cars, trying to locate the technology in particular places. The first part focuses on Phoenix, Arizona, a testbed for some of the technology’s most ambitious developers and also the scene of the first self-driving car crash to kill a pedestrian. Jack talks to various experts - historians, crash investigators, journalists and tech company representatives - to ask what the technology might mean for different places. The second part moves to Jack’s home town, London. The episode was presented and written by Jack Stilgoe and edited by Gemma Milne, with research assistance from Nuzhah Miah.