Environmental concern is a growing sensitivity among citizens and a priority for local and regional authorities. Making our vehicles cleaner and more sustainable is part of the answer, as is reviewing the way we "consume the car": ownership may no longer be the norm. It also means rethinking the mobility ecosystem in order to provide a more sustainable response. In order to play a role in the energy transition, these vehicles are and will also be integrated into an intelligent ecosystem. That of the Smart Cities, with their shared energy network. And what if preserving the environment was to be achieved through vehicles connected and shared with their users and their environment?