How much of "density" is just less space for cars?

For the most part, “density” is an unhelpful, unenlightening way of thinking about neighborhood conflicts. Most conflicts about “density” are really conflicts about parking or road space. Try it yourself. Next time you’re thinking of using the word “density” in this context, try replacing it with “competition for parking” or “competition for space on the road.” I bet you’ll find it clears some things up.