I... That's honestly not what I want out of a discussion of public space. There was a really crappy, vapid, superficial, Buzzfeedesque article in The Atlantic Cities about "placemaking" during the Seahawks parade in Seattle that discussed public space more than this does.
http://www.theatlanticcities.com/neighborhoods/2014/02/5-pla...
It's not really a public space when everyone is enclosed in a rocket-powered coffin communicating through flashing lights and loud honks. =X Actually, I wonder if I could get someone to make a play like that.
It's legitimate, in my view, to reclaim streets for the use of people without actually tearing up the asphalt and putting down grass. The issue is that the notion of a public space implies social encounters: friends are met and made, issues are raised and discussed, action is proposed and taken. A focus on how cars use roads whitewashes all of that because you can't do any of that from the seat of a moving car.
Looking at a map doesn't show a massive amount of parks, but there are several block sized spaces within about 1/2 mile.