For my money, nothing tops The Precipice dropping down into Bella Coola from the coast range crest. It's a full-cut bench (or was 30 years ago) sloped to the outside barely a lane wide with no guard rails--and no pavement. All you see is the drop to the outside, which seemed pretty close to 1,000 feet to the river. We did it with a fully loaded pickup--a freezer full of meat, tools, household goods, etc. That's the only time I've actually had to stand on the brakes to get a car/truck to slow down, and when we did get down there was a big sign telling travelers to beware of the grizzlies.

Every other road or non-road I've driven since pales by comparison.