Thank you for all the advice to date. On a related note, I am purchasing an open carhauler to haul the Jetta, my MC and a few other items on up to Anchorage when I make the move. Besides a couple spare tires and cutting a piece of plywood for the front of it as a rock-shield, should I consider anything else for it?
I've been up and down the highway about 17 times and have never had a flat nor a broken windshield. The entire route is essentially paved except for road construction areas. Parts of other alternate roads such as the Cassiar, Campbell, Klondike, & Top of the World are still unpaved but you probably aren't taking any of those if you're moving up. The most important thing is to keep your speed down especially if you see a fast moving truck approaching you.
All of the broken glass I've had has been in Anchorage and Fairbanks not on the highways.
Have a nice trip...