In this study, vertical axis wind turbine with low-capacity was used to take advantage of the energy from the car wake. The vertical axis wind turbine was designed to be placed on a median strip of two lanes traveling in opposite directions. Computational fluid dynamics modeling was performed to evaluate the performance of wind turbine with the help of ANSYS Fluent software. Some factors affecting turbine performance were listed as the speed of cars, the number of cars, the distance between the car and the turbine, and the distance between the turbines. The velocity of car was varied in the range of 60 km/h to 120 km/h, while the distances between car and turbine and between turbine and turbine were fixed. The results show that the evolution of car wake significantly affects the performance of turrbines. The power of vertical axis wind turbine could be attained about 4.8W at the velocity of 120 km/h.