That guy is a complete moron, and I smell something wierd, like a setup to get a brand new car. He could have just waited in his car for OnStar to send him a new car, but he edits the video before they say anything back to him.
Obviously there are "lemons" made by every manufacturer, but this one seems a bit weird to me. And good luck fighting with GM to get a new car now, after taping yourself just beating the hell outta that one. GM will have a pretty good argument in court now.