Since Tesla will be closing stores we are facilitating test drives/rides for potential new buyers with existing owners on the forum. If you want to find someone local to you for a test drive or ride in any Tesla, post it here!
I'm playing with the equation for aerodynamics for the S, X, and 3.
The "everything we know about M3" post has a reliable listing of the exterior dimensions. However the frontal cross sectional area is less than a simple length times height calculation.
I've seen a few rough guesstimates...