Yahoo Search Testing A Fixed Top Search Bar

Ruben Gomez noticed that Yahoo is testing a new user interface for their search results, which sticks the top search bar to the top of the page, no matter how far you scroll down the page.

Here is a picture showing the scroll bar midway down the page, but the top search bar stuck at the top:

Here is a video of it in action:

Ruben explains how you can override your browser settings to try out this new Yahoo experiment yourself.