I decided to test braking power on the following pictured wet driveway on a hill in my Model S 60D with ~1,150 miles on it. It seemed to slide a long way for twice the time and distance as my 2005 Mercedes E500 W211 with SBC. It also gave me much less physical pain from stopping force. The MB would stop so fast and precise that I would be in physical pain from it. The Tesla slithered along. I don't know if my MB would have slid further than I'm used to due to the downhill, but MB has been king of stopping from my experience, and that unusual MB SBC system actually worked pretty well while they made it (they've since replaced it), so this isn't necessarily a slam on Tesla.