The present invention regard an improvement for the electric car object of the patent for industrial invention n. 0001389629, Italian, title “electric car” name: Cunico Michele application n. RM2010A000115, dep. Sep. 4, 2008, Particularly the present invention improves the efficiency and the reliability of the complex constituted by the guide of the air 16, the wind generator 4 and relative structures of support, introducing some valves in the element of guide of the air 16. It also allows the car to acquire energy from the back and side wind by providing of channels empty equipped with wind generator that cross transversally the car.