I did a little work on the Slashgear YouTube video shot at the launch of P85D. Acceleration is indeed insane. Presumably there were at least 3 people in the car (movie is shot from the back seat). 0-60 is ~3.7 sec. You are also at illegal residential speed in 1.5 seconds. They hit 50 mph before entering the tunnel
Here is the graph
Here is the graph