[maerF0x0]

> It could be a fire truck, road closure for cycling event, tornado ripping through a town, a terrorist attack, a secret service motorcade, oil on the road, anything.

Some of these are likely just a lack of training data.

However, I agree that there needs to be a better self awareness of "Cruise has insufficient training data about this exact situation, now we fall back into a safer discovery mode, where we make reasonable guesses and also ask for the help of an operator"