For two years, the team of Esteban III continued the research partners while improving different parts of the car. In fact, only the shell and the solar surface were kept Esteban II, when all the mechanics has been redesigned and improved electrical.
The team was ready and more confident than ever to cross the finish line of the American Solar Challenge. It is with the low morale that the team returned from the competition: they failed to pass the technical evaluation. Experience has allowed to experience greater success with Esteban IV.