On a similar vein, I was very impressed to note that, when the I-5 bridge over the Skagit River in Washington collapsed in May this year, it took roughly 1-2 hours from the news breaking (around 7:00pm PDT) for Google to have removed that section of the I-5 from their maps.
I would be very interested if anyone has insight on how it was done so quickly (particularly as to whether it's some automated process driven by a reliable data feed, or whether human intervention was required). It seemed too quick to be instigated by Map Maker edits, but maybe if enough people submit the same change, updates are pushed through faster?