This thing will let you clip your Motorola Droid X phone into a normal Garmin Nuvi GPS windshield mount. Since Google Navigation has realtime traffic and better routing, there are a lot of times when we get better navigation info from the Droid X than we do from the Garmin.No need to buy a $30 windshield mount if you've already got one around for a Nuvi. This just slides onto your phone, and clips into the Garmin mount like a GPS would.Tested with Garmin Nuvi 200w and 205w mounts, which are probably the same as a ton of other Garmins.Print it, slide it onto phone. It's meant to be a tight fit, it's easier for people to sand / file down where the phone fits based on their printer setup. Print takes about 65 minutes with my settings on a HBP.