definitely, yes, SUV will get heat soaked parked at the mall. you get into car drop all the windows let the heat out, roll them up drive away and car will cool faster and stay cool while driving. SUV parked in garage, you pull it out, without tint it starts heating up immediately, with the back section being tinted, it stays cool while driving to your location. IF you were in a boat would you want a large hole, or a small hole? Water will always leak in, we are just reducing the speed. With the added benefit of holding the broken glass together, UV blockage, privacy.