Tesla Roadser Mods
Tesla Tattler 2008 Roadster Install
From the index page, click on a photo to get a larger version with comments below the photo. I'm posting this to help other owners who may wish to attempt the same install, but it's a non-trivial task with some risk of breaking things you probably don't want to break. Proceed at your own risk. I assume no reposibility for the quality of my instructions or anything that goes wrong in an attempt to repeat my procedure.
Under the cowl that goes over the speedometer I found the antenna for the satellite radio. There's plenty of space to mount the GPRS modem tethered to the Tattler with a USB extension cable. (Note the velcro on the bottom of the bracket that the antenna rests on.) There's plenty of space to mount the GPRS modem tethered to the Tattler with a USB extension cable.