"One of the beauties of the web is deployment. A service can be updated without you the user knowing. Google Maps has added SVG support for browsers that support it (Firefox, Opera) to match their VML support for IE. This is a lot better than the transparent PNG solution and prevents the server-client roundtrip. It also means that if you print directions, you get the lines :) Getting SVG support like this is great for the SVG community."
-- Dion Almaer   http://ajaxian.com/archives/google-maps-svn-support

Google Groups: Coming soon to Google Maps: SVG support

http://www.google.com/apis/maps/documentation/

Google Maps v2 To Use SVG    Google Trends - API for SVG?

Inkscape Wiki: Googles Summer of Code