This is really cool, but ultimately not that practical because it doesn't display the zipcode boundaries.
If it were integrated with zipcode boundary information as this [ http://www.usnaviguide.com/zip.htm ] site does with google maps, it would be pretty awesome.
Interesting idea. I didn't really try too hard making it a complete product, since I was only interested in proving the navigation concept that Bret Victor had described. But that's a good idea, and if you're interested feel free to fork it and add that capability!
If it were integrated with zipcode boundary information as this [ http://www.usnaviguide.com/zip.htm ] site does with google maps, it would be pretty awesome.