In the last few years, the concept of micromobility has gained a lot of ground, thanks to the introduction of new transportation modes, like e-scooters. These new, lightweight, electric vehicles are cheap, easy and fun to ride, and they are increasingly becoming a reasonable solution for first- and last-mile trips. New companies started spreading e-scooters throughout different cities\\around the world, with the aim of offering a new, dockless, e-scooter sharing service. These companies are growing fast and they have already been able to attract several hundred million dollars of investments. E-scooters - and micromobility in general - have the capability to reduce pollution and traffic congestion, but researches are questioning if they are really positively contributing to solve these issues.