I had not heard this one before:
ELON MUSK: That actually is faster than any Aston Martin or any Ferrari currently in production. And that understates the acceleration of the car because a gasoline car 0 to 60 is measured from when the wheels start moving. The wheels only move after you've engaged the clutch. In our case there's no clutch. So if you were to measure a green flag to 60, we'd probably be apples to apples about a quarter second better than an equivalent gasoline car. So our 3.9 is probably like a gasoline car's 3.6.
from here:
Extended Interview: Tesla Motors Chairman Elon Musk | Online NewsHour | June 25, 2008 | PBS
ELON MUSK: That actually is faster than any Aston Martin or any Ferrari currently in production. And that understates the acceleration of the car because a gasoline car 0 to 60 is measured from when the wheels start moving. The wheels only move after you've engaged the clutch. In our case there's no clutch. So if you were to measure a green flag to 60, we'd probably be apples to apples about a quarter second better than an equivalent gasoline car. So our 3.9 is probably like a gasoline car's 3.6.
from here:
Extended Interview: Tesla Motors Chairman Elon Musk | Online NewsHour | June 25, 2008 | PBS