I drive a 2001 Kia Rio. (recently gifted by my uncle so I don't know the complete history of the car) I noticed that when i go above 65 mph on the highway, it makes a strange whooing noise? Kind of like when it's windy outside and you can hear it from inside. I don't know too much about cars but I just wan to be sure that it's not something to be concerned about. Anyone have any thoughts? Thanks!