Oh, and speaking of YouTube, I watched a really good one again yesterday, it was on the related videos of another one I watched. The "steepest road in Canada" part caught my attention.
It was about the "Bella Coola Hill", rt. 20 out of Bella Coola, in British Columbia. I love this stuff, the road- well, the hill- is 12 miles and a 15% grade, with parts of it at 18%. And it's a dirt road!
I was wondering if trucks were even allowed on it, and yes they are. Another video of it showed a couple of tankers coming down and they were spraying a water and calcium chloride mixture to keep dust down. The guy on the motorcycle that was making the video said he preferred the dust, because it was very slick after they sprayed it.
This is not the one with the trucks...I don't think. It might be, but there's other shorter videos of it so it's not too hard to find.