The Nidaeco team regroups students of Aix-Marseille Academy, coming from various Engineering specialities. From first to fifth year, we share our knowlegde and skills with the teachers and the technicians, in order to conceive low-consumption vehicles, which allows us to compete in famous challenges, such as the Shell EcoMarathon or EducEco. The aim of these challenges is to compete in an energy economy race, in which we must decrease the consumption, over an imposed distance, with an average speed of 25 km/h.