One of the benefits of getting comprehensive public transport information fully integrated in Google Maps is the potential to include public transport in all forms of local search. An example of this is the experiment launched over the weekend to search for hotels based upon a travel time from a location. In the example below searching for Hotels within 25 minutes of the Google Office by public transport…
The use of travel time or isocrone maps is of course not new , Mapumental really pioneered they use on line with their public transport map developed with Channel 4, the next step for Google was greater integration of this analytical capability with local search in near real time !
The areas you can easily reach from your point of interest are spotlighted on the map, and you can modify the search criteria using different maximum travel times or methods of travel, perhaps you only want to find hotels only within 10 minutes walk, the map will update automatically to show a new spotlighted area and the nearby hotels.
You can also drag the red pin to find hotels near other places you might like to visit and agin the map will automatically refresh.