I think I mentioned above that I was able to uncork my vehicle with a phone call to Tesla (either the main number, or the service centre on Lawrence, cannot remember). I was told that some can be done without a visit, and mine was one of them (VIN 48###). Anyway, after reading this thread yesterday, I decided to test my 0-100kph.
Notes:
Model X 100D
I did the test only once
Flat, paved road
Nokian tires on 19" winter rims (Tesla winter package)
"Cold" battery, but ambient temperature in my garage was about 14C
Awkward stop button press on my watch, probably 1/10 second late
Actual final speed was 103kph
So, this is a worst case scenario value: 0-103kph in 4.47s. I am guessing that if everything had been done perfectly, the 0-100kph time would have been somewhere between 4.30 and 4.35s.
I hope this was of use to somebody.