FB feed at the reveal right now...
https://www.facebook.com/CorvetteOnl...1275809783414/
He started with a strong signal with clear picture but as he got closer to the hangar, the signal got worse and worse.
He just walked into the hangar and either the signal is lost in their or - more likely, GM has jammed all cell signals inside the hangar and they 'spill out' for a hundred feet or so.