As the article points out, the results might be off a little (on the low side) due to the run not starting from a dead stop, but the numbers are impressive nonetheless. Immediately upon throttle application, the dyno records almost 300 horsepower at zero miles per hour, and power peaks at 368 hp at around 55 mph (we imagine the "386HP" quoted on the video title is a typo) before trailing off to around 220 hp closer to the car's limited 130-mph top speed. This compares quite favorably to the power numbers provided by Tesla putting max output at 416 hp; the dyno provided no torque figures for the car. Dragtimes also believes this number bodes well for the car on the track, too, quoting a quarter-mile time of 12.2 seconds at 112 mph.
The video of the quiet, zero-emission dyno session is posted below, so check it out.