Lol. I think the other comment is making a suggestion that isn't quite reasonable, but maybe it's adjacent to a reasonable ask. Humans have a horn to warn oth

Lol. I think the other comment is making a suggestion that isn't quite reasonable, but maybe it's adjacent to a reasonable ask. Humans have a horn to warn other humans of unsafe behavior or conditions. We really only need to worry about warning in front of us. And we provide some warning to cars behind us in specific cases with hazard lights and brake lights. The autonomous vehicles have a better understanding of the whole state. We've already talked about warning other autonomous cars with V2V, but maybe there's something easy/sane they can do to warn human cars behind them and further increase safety.