It’s not the first time that Musk and Tesla have focused on drag coefficient as a metric of their vehicles’ efficiency. The 2012 Tesla Model S offered a measurement of 0.24.

Their findings suggested a drag coefficient of 0.43. So as soon as he heard Musk claim the production model's Cd had fallen to just 0.34, AirShaper CEO Wouter Remmerie and his team started ...

With a drag coefficient of .21, the Lucid Air takes the aero-crown from the Mercedes A-Class Sedan and the BMW 5-Series EfficientDynamics Edition, both boasting the industry-low .22 Cd.

For comparison, Tesla’s Model 3, one of the slipperiest cars out there, has a drag coefficient of just 0.23. Of course, until the vehicle actually hits the road, this is all speculation.