Well this is one very interesting article. It might even solve questions people have.... such as. "Can you run people over and shoot them?" 
 

Destructoid posted a rather interesting preview of L.A. Noire. A few things were brought up in the preview such as; 

Should you attempt to go on a vehicular killing spree, pedestrians will do their best to get out of the way of your car, and if you manage to mow enough of them down anyway -- or wreak havoc in other ways that would be considered unbecoming of an officer of the law -- the game will eventually stop you in your tracks and force you to return to an earlier save game.

We know that many of you will attempt to do this, so go ahead but be prepared to to load your game! Another interesting topic that was brought up was;

Will you be driving around an open-world city and shooting people in L.A. Noire? Yes, but that’s not the focus. I used the word “adventure” earlier, and in fact, that’s what stood out to me in the demo. This game retains some of the familiar trappings of GTA, but at its heart, it can perhaps be best described as an evolution of the classic point-and-click adventure game.

So as you can see, it will have a little bit of "open-worldness" to it, but that's not how they intend you play the game. The thing that struck me most out of this preview was the final paragraph, and it's what I've been wanting to hear for some time now.

L.A. Noire trots along at a very deliberate pace, with few “gamey” conceits. A real detective needs a keen eye and a meticulousness about him; you’ll have to take your time exploring crime scenes and use your brain -- along with the evidence at hand -- to solve cases. As Phelps, you have to be a good guy, but between the variety in crime-scene investigations and witness/suspect interrogations, this game may turn out to be more legitimately open-ended than any Rockstar game before it.

The reason I made those two items bold, is that I think that a lot of you were worried that the actors we are interrogating were going to be over acting, and it will be blatantly obvious what the answer is. After reading this, I am glad that you will have to "use your brain" to figure stuff out, I don't want it to be an easy game, I want to work at the mysteries that are before me!