This video shows off the new Prius iPhone Campaign where users can download an app, create drawings on the fly and add content live to the massive screens in Times Square. There have been similar campaigns created with bluetooth, but nothing of this scale, location or prominence.
The iPhone App has 4 different modes, with the most interesting being this one! It’s been live in Times Square over the last few days! (via Ogilvy Blog) Created by Saatchi & Saatch LA.

Source:
http://www.digitalbuzzblog.com/prius-iphone-app-controls-times-square/