Search – Google Maps Sneek Peek
*Google are testing and this may not be available to all web users…
Highlight the map area of interest by search.
Useful for Countries, Administrative, City Limits and even Islands.
Great for people who are looking but don’t necessarily now the shape or administrative regions Zipcodes in the US, Postal Codes in Canada (but not UK postcode sectors).
Google are testing a highlighting method for the users search
London (Westminster London) is automatically highlight when users do a search on google.com
sources:
http://searchengineland.com/google-adds-zip-code-outlines-to-map-one-box-77733
http://googlesystem.blogspot.com/2011/05/google-maps-onebox-outlines.html