The same architectural team proposes redesigning the city streets in the financial district, replacing impermeable roads with cement lattices that cars can drive over, but that allows grass to grow in the interstices.

In addition to revamping the streets, the architects also suggest overhauling the sewer system in lower Manhattan to carry storm water along the city's permeable lands, where it would be absorbed back into the ground. Combined, these two adjustments would keep runoff water from overwhelming the city's aged sewer system, which today leads to raw waste being flushed into the river during storms.