I have a 2015 85D and I own a vbox which uses GPS to measure perforamnce and is genereally considered a pretty accurate device. I'm not a pro driver or experienced drag racer but the best time I can get is about 4.2s on the 0-60. More often more like 4.4s, which seems to be in line with what Tesla had advertised. I see on here and in a few other places people quoting 3.8 and 3.85 on an S85D for 0-60. Is this for real? I wonder how their achieved it? What's the real story?