Thanks VDC. I wasn't aware of that.
I confess to having been stunned to discover the terrible deep bass harmonic beating sound that happens if I put a one of two windows part or all the way down but how that disappears if all four windows are opened. Weird.
Guess I'm showing my age but I fondly recall from my childhood the little vent windows both in front and rear windows that could be angled out to control air flow with the main windows open or closed. You could ride all day at highway speed with open windows and not get battered by the wind one bit in either the front or rear seat if those little triangular window vents were opened.