This isn't that terrifying guardrail-free road, though -- I drive this in a Model S ~15-20 times in each direction every winter on my way between Seattle and Wh

This isn't that terrifying guardrail-free road, though -- I drive this in a Model S ~15-20 times in each direction every winter on my way between Seattle and Whistler. Autopilot is fantastic for that trip between UW and turning onto CA1 where BC99 intersects it. From there up to Lions Bay and from the far side of Lions Bay[0] to Squamish I keep the car in self drive after a few too many attempted suicides by Eddie[1]. It's not that there aren't guard rails, it's just that it really winds about as it hugs the cliff face. For most of that trip Autopilot generally doesn't want to engage -- it knows better when it can't predict the lane boundary far enough into the future. Past Squamish it really depends on conditions. My trip up this Saturday morning was downright boring and autopilot handled the whole thing. On other trips at night the road has essentially been one solid white surface where even humans avoid each other by treating it as one very wide lane in each direction and maintaining lots of clearance. [0]: Lions Bay has a 60kph speed limit; autopilot can generally handle it fine, regardless of conditions, although the wide variance in prevailing traffic speed makes this among the most dangerous parts of the trip. I often wonder how the accident and injury statistics for Lions Bay compare to the rest of Sea to Sky. [1]: My Tesla is named Edison's Lament. Yes, you name your car. Yes, I enjoy this feature.