Never implied to demo homes or change setbacks, the idea would be to narrow the street to one actual car width as opposed to 2 or three car widths, extending the sidewalk width into the street.

This has a added benefit as if the street needs repaving you only need to spend money on repaving of one car lane width, as opposed to 2 or 3 car widths on a single lane street.

And now what happens is if a car is not parked that space becomes usable to a pedestrian to cross at or walk on.