Well, it looks like won’t have to wait until CES for more details on Garmin’s new ecoRoute ESP module after all, as a listing for the device has now already turned up on GPSCity.com, and the site has even provided us with a few additional, as yet unofficial availability details. Apparently, the cable (which ties directly into your car’s on board diagnostic system) will run $149.99 and might “possibly” be available by the end of the year, but is more likely to roll out sometime in the first quarter of 2010 — and it’ll supposedly only work with nuvi 1xxx series units that have Bluetooth