There are two types of wind at the front of the car:
One is the wind generated by its own kinetic energy (relative wind). Where does this energy come from? It is converted into electricity by itself. Do you want to convert it into electricity again? Isn't it a waste of energy to go around like this?
The second is the natural wind from the outside, which can be divided into three types: 1. Wind from behind; 2. Wind from the side; 3. Wind from the front.
1 can be used; 2 can also be used; 3 may be used, but it is estimated that the available power is not very high. Think about how much power such a large wind turbine on the front of the car can generate?
The most important thing is that the first wind is the main wind for the vehicle. The second wind can be almost ignored and is not useful at all.
So, in order not to mess around and waste energy, in reality no one will install a wind turbine on the car.