I appreciate your comments on Black ice, however with temps hovering between 9 and 14 I don't think black ice would be an issue. Also, in 50 plus years of driving, I have always tried to stay within 10 MPH of the prevailing traffic. I.e. Speed limit 65, majority of cars/trucks going 70, I would not drive less than 60.
I believe, the DRW stability is phycological. I have never had an issue passing, or being passed by trucks. I related my experience because it was the most cross winds I have ever felt towing my 5th wheel! The performance of my 2500 Dodge was far above what I was expecting, yes I have read all the "DRW stability posts" and was expecting a white knuckle experience, but was pleasantly surprised.