They link to the original Google Now video in the post. It goes into a lot more detail.
I was talking about that one too. I watched them both.
Neither of them makes it clear that any of this stuff is any different than what I currently do with my iPhone. It says it shows traffic and can re-route you...yeah, Google maps has always done that. It was the commentators here who explained it to me that it automatically checks when you leave the house. The video didn't say anything about that.
Find a restaurant? Check a flight? The way the video makes it look it seems exactly like what I do with UrbanSpoon and an airline app. If it's not the same, which it apparently isn't, then I suggest they put that info in the video itself.