All of us are different heights and sit differently in the cars. Those who are over approx 6' would do well to utilize both the sunvisors & side wind deflectors, and wear a baseball cap (tight).
Im about 6'1", the combination of the bill on the ball cap and the sun visors helps move the air over the top of my head. Although
once you drive these cars above about 80 mph the air will attempt to fill the void created as the car moves through the air
and severe buffeting ensues. At twice the national limit if the wind doesn't beat you to death the noise will deafen you. Sort of like riding a 500cc Grand Prix Bike in your birthday suit!
Rick