I saw the notice that Tesla had selected AT&T as the carrier for cell connection to the car. AT&T is absolutely worthless in my area. No connection at all most of the time. I'm not remote, a bit out of Seattle, but the specific area just doesn't get AT&T coverage. I hope that Tesla will have an option for other carriers. I have a signature series model X reserved. This would be a big problem for me. Anyone else with the same issue?