And, we're full circle at this point.

They had an issue detecting them here. But my understanding was people were saying beyond seeing the flooded section there is a fundamental problem that they can never solve that if there is new construction under the flooded section lowering the level of the road they can never deal with that. But as long as it is not a sudden dip or sinkhole I think HD mapping can still help with that since they can monitor the cars altitude as it traverses it and detect divergence from what is mapped early.