Has anyone used the Garmin Eco-Route yet?
Garmin Eco-Route Add-on Turns Your GPS Into a Green-Driving Teacher : TreeHugger
I'm curious how it works and how good the info is. I got my wife a Garmin Nuvi a few years ago to cut down on the "I'm lost and I don't know how to get there" phone calls. However, her's isn't compatible with this new 'eco-route' system. Just wondering if it's worth the upgrade.
The treehugger page says it needs a special cable that uses bluetooth transmitter but I couldn't find anything about this on the Garmin website. It's only worth it if it actually plugs into the OBDII and uses real data like the scanguage. This site says it does:
Garmin ecoRoute ESP | GPS Tracklog