Re: Units, not numbers
Also, Tesla used to use Motor Trend to verify acceleration, and may still do so, which means the quoted 0-100kph time would be about the same as the actual stationary-60mph time:
"...the Motor Trend standard excludes the first 28 cm of rollout. Including this rollout adds approximately 0.2 seconds to the acceleration."
Tesla All Wheel Drive (Dual Motor) Power and Torque Specifications
JB Straubel, Chief Technical Officer, September 21, 2015
OTOH I've seen a Model X P90D Ludicrous outdrag a Challenger SRT Hellcat from stationary, but also an Audi RS6 flip that result from a 5mph rolling start. Real-world experiences with the new battery pack will no doubt mean that very few cars will keep up, even if the ultimate acceleration [*] isn't always available because of things like the battery being lower than a certain capacity (I heard this was 70%), or that it hasn't been pre-warmed as part of the car's internal preparation when activating Ludicrous mode...
[*] The limit on acceleration on the Tesla is down to a few things, such as adjusting the max power sent through the front motor to prevent wheelspin as the car bias shifts rearwards during sudden acceleration, and the max current draw from the battery. From the same link above: "With the shaft horsepower coming out of the motors the situation is not always as simple as front + rear. As we have pushed the combined motor horsepower higher and higher, the amount of times where the battery chemical horsepower is lower than the combined motor horsepower has increased." Tesla have improved the battery, so seem to have raised (if not yet removed) one of the limits on the maximum amount of energy they can pour through the motors.