It has some talk about traffic accidents when you travel outside of a cul-de-sac, but doesn't talk about the increased safety inside (especially for say children who play in the area), doesn't talk about crime rates, or any of the reasons people move into suburban areas. It throws in some off the cuff comment about being more connected, but doesn't say why that would be true in a more densely populated grid layout (as opposed to knowing your neighbor more in the the suburbs).
The article seems really poor actually, rushed to meet a deadline.