Google is experimenting with Search Query Defined Dynamic Headline for their own site

Google is experimenting with Search Query Defined Dynamic Headline for their own website, I search for "Google.com.sg" on Google.com, the search result returns Google.com.sg with title : "google.com.sg". It's exact matched what I searched for. This technique you may seen in Google Adwords (Dynamic Insertion). You may try experiment with your website and check click through rate via Google Webmaster Tools. I am keen to explore around about this topic (Search Query Defined Dynamic Headline). Share what you think!