I was coming down a hill today around 38-40 mph, following this guy I had just met; we had struck up a conversation earlier when I asked if I could draft off him. As we went through the twisty section, I paid attention to my speedometer a half second too long and looked up to realize that I was going too fast to turn. I was in the drops, and pulled the rear brake a little too hard - complete loss of rear traction (not to mention a very cool and scary powerslide ) but I managed to save it by easing off the brakes and making a few split-second balance adjustments. Very nerve-wracking; I thought I was about to get pretty seriously injured going into a ditch or something at car speeds.