I came across a YouTube that had a video that explained two points.

• What causes traffic
• Why autonomous cars are better

I recommend watching at least the first half because it has a few scenarios that causes traffic, some of which are semi-preventable. And you should watch it. And you should apply that to your own driving habits.

Anyway, the later half talks about how autonomous cars solve this problem. But if you skip to about 4:04, it shows autonomous cars zipping by each other through an intersection smoothly.

And while this scenario does look good here's what I want to know. What if a puppy randomly runs into that intersection? What if someone who's on their iPhone blasting their ears away while catching up with Instagram isn't paying attention and walks into the intersection? What if a tree falls over and blocks half the road? What then?

I want to know what happens when autonomous cars fail. They need to fail. We need to know what happens when they do fail. There is no "if", only "when", and the sooner we figure this out and plan for it, the better.