How to Build a Morally Ethical Self-Driving Car

What happens when the road gets bumpier? Not too long ago, tech enthusiasts were telling us that by 2020, we'd see self-driving cars hit the mainstream, with some 10 million on the roads. That turned out to be a wild overestimation. The actual number of vehicles in testing is thousands of times smaller, and they're still driving mostly in controlled conditions. Companies have also scaled back their ambitions, aiming more for driver support than full autonomy, just as sober-minded transport experts told us to expect. But slower development is probably just as well, as it should help improve vehicle safety and give engineers time to prepare for other threats, such as hackers turning cars into destructive weapons.