If it is wind noise coming from the door/window, one of the best ways to pinpoint it is with a stethoscope. Since you believe it to be the driver's door, be careful and use two people....the person with the stethoscope needs to be someone you're OK getting close to ;-). They need to carefully examine the periphery of the window opening with the stethoscope. If there is a leak, it will roar in their ears when they pass over it. The best way to clearly ID it is in fact wind noise is to drive it in a cross wind and notice how it affects the frequency. If gusts of wind affect it at constant road speed, it's wind noise. If not, it's something else. I once worked at Ford and the window modules are prone to generating this kind of hard to locate noise. Normally it is an ELF (Early Life Failure) caused by a "pucker" in the rubber module that grips the metal flange of the door around the periphery of of the window opening. Has any service been performed on the driver's window due to accident or other failure?
One of the other chassis related noises that could cause a high speed whistle that is strictly road speed related are wheel bearings. I had an F150 OEM wheel bearing go out at ~100K and it sounded just like a turbine. While 36K is early for a wheel bearing, large diameter wheels and corrosive environments can accelerate Wheel Bearing failures.
Good luck, let us know what you find.