So I was driving back from the bank today and this Mustang GT and I started... um... going fast. I wouldn't call it racing as he wasn't trying to pass me and if he did I wouldn't have cared.

Anyway... when I got up around 130-135 I heard this whine noise. Was that air rushing over something or was that from the engine? Was it a bad thing?

 

I have had the same thing, most likely the wind coming in thru a small "dent" if you'll call it in your weatherstripping. The air comes right in for me at 135+