Celebrating the Audi R8, I worked with a team of very creative directors to create a parallax scrolling experience within the Audi Library epublication.  Users would drag their finger bottom to top (or vice versa to scrub backwards) in order to navigate an image sequence, giving the impression of dragging the art along the screen as the story unfolds.  It was a cool effect but the app is no longer online so you'll have to hit play and use your imagination here.