Retail copies are now floating about, so I see that video as a way to show the game running and working on consoles. There's a lot at stake for CDPR with this game, they don't necessarily want 360p footage of someone doing weird shit to be first thing people see.
New things from that video:
If you decide to rampage about on the streets, a gunship and super cops are going to destroy you almost instantly if you don't get away.
The first couple hours look like a lot of setup and tutorial/on rails stuff to introduce a lot of stuff.