loving google maps api
I have combined Google Maps (using their newly released API) with Where2GetIt's Locator and Routing XML-RPC services. This is just hitting the demo account database so it's basically pulling up KMart locations. But it should give you a feel for what's possible. It uses AJAX to hit a server side PHP script that hits W2GI web services over XML-RPC for location information and routes. So it's pretty sweet. You type in your zipcode, it gives you a map of the locations in your area. You then click on a point and it gives you a pop up with the driving directions to the point and highlights the map appropriately. Pretty slick. Check it out at http://paulbaker.net/gmap/.