Yep. Self-driving cars are a great example. They will solve every transportation-related problem a modern city has! Cue the horrible dystopian animation of an intersection without traffic lights. Sorry to be a Luddite buzzkill, but what I do if I live near one and want to walk?

All you would need for that is the traditional "Walk/Don't Walk" sign. Sensors will detect when you are at the intersection, and coordinate with all the autonomous vehicles to stop so you can walk. After they have all stopped, the Walk sign will light. No need for traffic lights. That is an easily solvable problem.