So, T-Mobile (and probably others) are offering a Wi-Fi Hotspot that runs from a car's ODBII port. Called a "SyncUP Drive". Besides the hotspot, it also monitors the ODBII stuff and connects to an app for reporting on what the car's engine is up to. They had one on some sort of special deal yesterday (like, just about free), so I got it. The thought was to use just the hotspot part of the product features, since I know the Roadster doesn't do much talking on that port. It appears to work, but only for a few minutes, then shuts down. I'm guessing it thinks the engine is not running. I don't have the app loaded (phone is out of space), but the web browser interface to the device doesn't seem to have any knobs to adjust anything other than the network parameters (wi-fi, firewall, router, etc.). Is there a relatively easy way to create a fake "engine running" signal on that bus? Maybe with the new OVMS v3 (vague recollection of a pass-through port), or even a module on a Raspberry Pi? The module is nice in that it comes with lots of free data, and automatically powers up with the car (unlike a puck-style hotspot that needs to be managed).