The Model S Performance model managed a 12.371 quarter mile at 110.84 MPH with a 0-to-60 MPH time of just 3.9 seconds, according to DragTimes. Impressive numbers.
This was the best run on a full charge, with slightly slower times when it wasn't charged, although it was still in the '12s regardless of the amount of juice in its batteries. To put it context, that's roughly as fast as a brand new Porsche 911 Carrera S.
That it beat the Viper is amusing even if it seems more like a driver issue than the actual car itself. A Viper should pull times in the 11-second range.