[ZeroGravitas]

Once vehicles are outputting less toxic fumes, semi-enclosed outside spaces make more sense in both hot and cold climates.

Pedestrian subways is an idea overdue for a revisit as are bike routes that pass through parks and indoor malls.

Do any of these "city of the future" projects explicitly address this kind of thing? Seems kind of obvious.

Though I think its obvious that bicyles would be really handy in a zombie apocalypse (or any kind of apocalypse really) and that seems to be generally ignored by our modern culture too, preferring hot rods, trucks and helicopters.