In rallying something like that(but actually functioning) can be used on the windows in the rear to keep the air flow trough the car to keep temps down in cabin. But they are only used on the rear windows, to get a proper air flow, and you pull the window up against it, not through it. ( The holes should be open otherwise it loses itīs function, duh)
The reason for that being is that you are not allowed to compete with windows down in case you roll you car. The glass is supposed to keep stuff inside the car while rolling (including your arms) and also stuff out from the car while rolling, the glass is covered with a thick see through plastic film that keeps the glass from shattering.
So that was the original intent of them.
But in this video itīs just for decoration i guess.
Last edited by Bempa; 03-28-2019 at 02:13 PM.