I'm curious about this as well. I've tried a couple ways to get a 0-60 on my 90D (no P).
PowerTools gave me 4.5 seconds for 0-61. That's got up to 0.25 seconds extra on each end from timing resolution. When I put it into Excel and took a linear estimate for 0 and 60, that brought the total time down to about 4.2 seconds. Unfortunately, I was only at 46% SOC. I need to run again with a higher charge.
I've also tried the "film the speedometer" method, and got 3.9 seconds at 70% SOC. Because speedometers tend to display high, the real time would be slightly slower.
Neither of my methods is very accurate, or does fanciness like 1' rollout, but it's right around the 4.2 that they quote for my model.