Estimates vary, but the consensus seems to be that we’ll see a meaningful number of self-driving cars replacing the human-powered ones by 2020, less than four years hence. Personally, I think that’s a bit optimistic, but I have no doubt that the future of cars is a self-powered one. While we fret about the future of radio in fast-changing conventional dashboards, we’re missing the much bigger worry: What happens when all the tech sacrifices made to cater to the driver’s atten