The thing that always sticks in my mind is this: Just because I have control of my car right at X speed and Y lane with cars ABC at such and such a distance right now does not mean that someone else will not put their car in a position that compromises my ability to maintain those safety margins.
I.E. Yes I and my car are capable of going 35mph faster than everyone else on the freeway and threading between that semi and the minivan, but what happens when mid lane change the minivan slows down, or the VW bug merges, or the Semi crosses center by 1/2 tire width.... Other peoples actions can quickly change a situation you have under control into something dangerous quickly....
You cannot control other people and their actions, just because YOU have control does NOT mean anyone else does and you cannot know how they might react. I have NO ISSUE hammering it up to a reasonable speed on an onramp, maybe even 5-10 over, but going 120 on a freeway is just stupid.
Honestly after being on track, hammering public roads leaves alot to be desired.....