I'll get even a little more tangential... The Aptera's tear-drop design is obviously extremely aerodynamic...but they didn't stop with the shape, they actually have the air that was used to cool the battery packs exit at the tip of the tear-drop to further disrupt the drag effect of the eddying air in that area....just brilliant. Maybe it only buys you an extra 0.01 on the Cd, but every little bit matters at that level.