In a post today, Google Letting Addresses into AdWords? Greg Sterling pointed out that Google appears to be allowing street address as a 4th line in the adwords (see Therapia lower right in image below). As Barry Schwartz points out below he first saw this in early December.
What struck me about the search result page (message San Francisco)was the number of changes implemented over the past year that integrate more local information onto the main search results page. Notice how much closer at hand local information and Google Maps is in general and how many local inflections Google has added to the page beyond just the Local OneBox.