I'm working on a simular (but different purpose) solution with Phil. Phil created a client and i created a server (php and db). It allows you to track a route while on the go. The logged route can be plotted on Google maps (or any other service that supports KML).

We don't have any release yet but you can get all the current files from SVN:

https://garage.maemo.org/projects/livegpslog/