We made the right decision, to not take the bus.
Met a couple with a bus like ours in Dawson City. The next day, they headed out over Top of the World highway. Serendipitous, they were in the same campground as us in Tok so we could share stories.
Driving our small class C, we thought it was a pleasant drive. Only minor problem was encountering a wide load on the narrow, steep drop off section but we just pulled over and let him pass. The bus however...
The bus owners told us they got stuck in the mud in the construction area and had to be pulled out by the workers. Looking down from the windows, the passenger could not see the road, just the sheer drops. Every passing encounter pushed them over almost to the soft shoulders. They had to unhook their dinghy so the wife could lead and radio back that it was safe to come ahead. They said it was a stressful trip and not to be repeated in a 45' bus.
