I saw someone mention this yesterday but didn't realize there was a second piece on the Sky today. Click on GM Times for March 9 and March 10. The information on the Sky is at the end of each clip. Sounds like journalists were invited to a sneek peek at the Sky. Looking at the GM badge on the doors (its blue not silver), I think this means they are production cars.
http://gmtv.feedroom.com
http://gmtv.feedroom.com