GpsPasSion is reporting a hidden tracklog recording / playback feature in the latest firmware (v 3.40) for the Garmin nuvi 200 series. Here’s a thread about how to access it that includes a link to a tool for converting the track to a .gpx file.
Tracklogs, for those of you new to all this, are a sort of electronic "bread-crumb" trail that shows where you’ve been. They can be used to record and show your travels in MapSource, Google Earth or any of a myriad of mapping programs.
The nuvi 700 series includes tracklog recording as a standard feature. Will Garmin add this to the 200 series and other nuvis as an official feature in the near future? We can only hope.