4 years ago.
My bud was rounding the turns at, roughly, 20mph over the speed limit and it was causing my rectum to retract in my abdomen a bit... I was the one on the cliff-sides, after all.
I remember offering, "you know... I'm sure they have those speed limits posted for a good reason."
Since then, it's been about timing over leisure every trip, so I've opted for the 5.