Cities occupy a central role in the world economy: according to data from the United Nations Organization (UN, 2018), 55% of the 7.59 billion inhabitants of the planet live in them. That number, projected to 2050, will be 9.7 billion, and 68% will live in urban agglomerations. The mobility challenge of this mass of people was addressed during the conference in Barcelona. The use of the car is resignified, with automakers who changed their business scheme and city councils that propose their citizens to walk more.