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The 3's Cd: "hopefully 0.21"

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Despite what people who don't like the nose say, I suspect that it looks like that precisely for aerodynamic purposes (namely funneling smooth flowing air under the undercarriage). But aerodynamics is black art, and the days of just looking at it and making it look more like a raindrop, are long over. Elon talked about 0.1mm making a difference. Given the improvement of 0.04 over the Model S, and the presumably smaller frontal area, we should see a noticeable improvement in kWh/mile

Thank you kindly.
 
They wanted to ditch the mirrors which would make a major difference, but it would require laws to be changed. (here in the US anyway)

If the legalities were figured out, I would bet that Tesla would offer this as an option at least.
 
I'm wondering if the "hopefully" means only if they get NHTSA to approve replacing the side-view mirrors with cameras. Also it may require aero wheels like on the gray prototype.

wheel-tesla-model-3-aero_grande.JPG