I have seen the ton and beyond..twice in fact..once in Montana on either 49 or 89? about 4 years ago with my wife when we were touring Montana, Idaho, Washington, Oregon and Wyoming.
Then again last summer in Utah on 80?, when a buddy and I rode out to California and back although I don't generally go that fast. Highest speed limit close to me is in northern Kentucky and it is 70, and like I said I usually ride speed limit plus 5, so 80 is about as fast as I will normally ride
but it's not about that, I just see no purpose (for me) to rev the snot out of my bike, just to get to that 80 a little bit quicker. I will get there eventually.