Heyo! I just have a quick question about the car

My dad owns a 2007 Aveo LS Sedan, base model. We've had it for years now, but we've always had this weird whistling noise when we go interstate speeds, or on pretty windy days. We've gotten used to it, but I've always wondered what might be causing it. Anyone have any ideas, or maybe ideas on how to stop it? Not an urgent issue or really a need-to-fix, just curious

I recorded an example vid of it tonight while on the highway, here's the vid below