In a word: 'no'. You are not figuring the sort of roads you have in Alaska. They are not interstate highways with controlled access and plenty of room for passing slower traffic. Often you are on a 2 lane road and stuck with the average speeds. A wreck, a moose in the road or just bad luck.....you wait.

I have sat on the road to Homer stopped by fog. I mean stopped. Road closed! As in officially closed due to the danger. I have sat on the road to and from Denali in stopped traffic or extremely slow traffic when a bunch of RV's got into convoys (not legal by the way) and decided to amble. If the state fair is on.........

jackal loves to drive and to do a lot fast. I'll leave it to him to study your schedule.