Big +1. Here using the turn signal is iffy because some drivers see that as a sign to speed up to try to overtake. I’ve had a few close calls where I check my mirrors, everything is safe for a lane change, turn on the blinker, and the guy in the left lane floors it from 5 car lengths back to cut me off. Sigh.

The Waymo driver is very passive and defensive so I imagine it will be quite slow compared to an Uber who is willing to fight to make turns etc.