Ajlift

I really am enjoying my new 05 Rx330. I was wondering about a sound that occurs only at faster speed>65-75mph. It sounds like an air/wind sound in the vehicle's rear. Almost as if there was a window partially open. The windows are closed. I thoght it could have been wind noise against the adjustable right rear antenna, but no change occured after flattening it. I also tried to adjust the position of the roof rack bars with no change.

Maybe it is just a normal aerodynamic noise of wind against the luggage rack?

The vehicle is so tight and quiet normally that this really stands out.

Has anyone else experienced this? Any ideas?

Is there any way to NOT have the average MPG information reset after refueling the gas tank. I would like to be able to monitor my fuel consumption over a longer period of time.