I live in a part of San Francisco that has a lot of self driving car testing, and I generally agree with this. I'm not saying that I think Cruise's cars are good at driving, but all their errors that I see appear to err on the side of being slow, albeit sometimes to an almost laughable degree. Sometimes it's actually unsafe when you're driving behind them as they'll randomly slam on the brakes for no obvious reason, but I was taught to leave enough following distance and to pay attention to the road. (Still, I bet they get rear-ended a lot.)

That said, I'm probably not signing up for this.