[tptacek]

Single family zoning isn't simply a car thing. I live in a small, walkable, transit-friendly neighborhood full of crunch eco-liberals, and it is entirely hostile to upzoning for reasons having nothing at all to do with cars; it's a central tool of NIMBYism.

[couchand]

Oh my yes: whatever height is currently built is perfect, every currently vacant lot is a prize, etc. etc.

But the GP spoke of single-use zoning, a slightly different cudgel. I understand the abstract appeal of dividing up a map into neatly-separated areas, a la SimCity, but that just doesn't accomodate real life.