I haven't. It's part of discussions around hypothetical futures where everything is self-driving and the vehicles communicate with each other to form dense con

I haven't. It's part of discussions around hypothetical futures where everything is self-driving and the vehicles communicate with each other to form dense convoys on places like freeways where there aren't pedestrians. I certainly haven't heard any mainstream suggestions that self-driving taxis ought to drive faster than humans in spaces they share with human drivers and human pedestrians.