The 4th edition of Mobiance workshop, held in Grenoble in October 2019, brought together 18 international students (engineers, architects, marketing experts, and urban planners) from 6 different countries. The workshop goal was to focus on spatial and informational mobility without any technological limit, starting from a real transportation hub in Grenoble, namely Chavant. Their proposals show a city automatically adapting to the needs of citizens and continuously collecting data, even the most intimate one. They proposed omniscient digital universe that fluidly links the real and the digital spaces. Keeping in mind the limits and the drawback of such concepts, the future shared city might be a city made as a common.