Jim :
I kinda thought we wanted the company of another rig on our first run up there last year, but along the way we came to enjoy the beauty, solitude and wonder of the trip from Ft St John over to Anchorage. Along the way we'd bump into folks at waystations/ campgrounds/ towns etc and stop and chewed the fat with them. We found folks along the road quite friendly and eager to engage in talk. Often times we'd see folks along the way for the next few days or so that we camped with earlier.
(Secret opportunity- never pass up good cinnamon rolls on the Alaska Highway!)
Yes it is remote and you may go a half hour without seeing another vehicle occasionally, but its pretty well traveled and not much different than many highways in the western US.
You are truly going to enjoy it. I found my apprehensions were not well founded after we did it. Can't wait to go back up first of July.
If you'd like to see our report and pics from last year drop me a PM
Joe