Local.google.com is latest AJAX stuff

I just read this post on Slashdot about how "Google Maps Graduates". You've got to see this for yourself. I just tried it at local.google.com and typed in 'pizza ' and it displays all locations in a Google map and addresses of all local Pizza shops within seconds. Pretty impressive stuff. This is one of those "no way it could be that fast of web application" that just blows you away the first time you see it with your own eyes.