Is it broken on my iPhone or is it just a tilted map with a circle overlaid?<p>There's a screenshot on the linked site which leads me to believe that is the indented behavior. Doesn't seem that similar to PG, as the title implies.
This is really awesome, fantastic timely example. I love the ability to rapidly prototype with html, css, javascript and third party api's.<p>Edit; probably a bit too much self promotion, as commented below.