Tried to be careful with "up to". LA's city center has been measured at 59%. I'll try to find the source again. But just consider: - roads - highways / major

Tried to be careful with "up to". LA's city center has been measured at 59%. I'll try to find the source again. But just consider: - roads - highways / major ingress/egress - sidewalks (yup. Don't really need them without cars) - parking lots & garages A nice source with color-coded maps - http://oldurbanist.blogspot.com/2011/12/we-are-25-looking-at-street-area.html http://oldurbanist.blogspot.com/2011/12/we-are-25-looking-at... A nice survey/writeup from Vox: https://www.vox.com/a/new-economy-future/cars-cities-technologies https://www.vox.com/a/new-economy-future/cars-cities-technol...