Back to the OP's original post, I like to carry a few extra maintenance parts. Tools I am comfortable using, an extra oil filter, a couple of fuel filters, a fan/serpentine belt(s), air filter, etc. If your vehicle has any known problem areas, carry those needed replacement parts. i.e. my last tow vehicle was a Dodge diesel pickup and those early 2000 models had a problem with the low pressure fuel pumps, located on the engine block. They were not hard to change but not always easy to find one available. Lots of good mechanics on the trip north, but even breaking a fan belt could result in sitting around for a few days till a new belt can be sent to your mechanics work place. Have one with you and it is just a short unplanned stop.
Make sure your vehicle is in good shape before you go and it should make the trip in good shape. As mentioned many times above, slow down and drive at a speed appropriate to the road conditions. Remember, the road is not moving, just your vehicle, so how hard you hit a hole or bump/heave is based upon your speed at the time of impact.
A few years back, Sue t. and I gave some serious consideration to forming a partnership business and run caravan tours to/from Alaska. Main problem we came up with was, my thoughts that she should do most of the work and I would handle the money. Not sure what her problem was. Her husband, was going to be the tailgunner (her husband, Steve, can fix anything, almost) Sue could be the Wagon Master, my wife Patti would handle all the details, reservations, etc.
Our plan was to make an option in the trips to be either one way or a round trip with the group. We thought that on the way up to Alaska, people would find places where they wished to spend more time and they could do it on a one way trip with the group. Caravan group on the north bound leg and then those that wished could come back with the tour employees or they could go on their on in Alaska and return solo or in informal small groups if they put them together themselves. But at the time, it turned out, neither couple had the time, right them to do this all summer. Still think it would be a workable idea for someone younger than me.
Next Tuesday is Sue's birthday. Easy for me to remember as we were born on the same day and close to the same year. Well not real close but kinda, sorta. Actually I was 20 years old the first time I probably saw Sue, about 4 at the time, playing in the mud puddles outside her family's gas station/garage in Beaver Creek YT.
And yes, I do buy pixels by the barrel when they are on sale. LOL