This document proposes a business idea to temporarily fill empty urban plots with products and functions that provide community services in exchange for tax reductions. This would increase eco-mobility, provide parking and advertising space, and promote environmental education. Some benefits include higher tax revenues for the local administration, lower taxes for plot owners, reduced unauthorized parking, and a greener, more communicative urban environment by turning unused space into opportunities. The founder's vision is to upgrade cities by converting ugly voids into better, greener, more communicative urban areas.