http://www.youtube.com/watch?feature=player_profilepage&v=dg1eNBkk9KM
See it here, much much much faster, don't waste your time and quota on the RockStar website.
The game trailer never tells what the real game is all about, a demo, a real game play will tell the whole story. But GTA since the beginning was a big hit after hit, so I don't think the V version will be an exception.