Posting here cause the tech itself is drive train neutral, and can improve the aerodynamics on any car. It's like active grill shutters. At higher speeds, air dams drop down to divert air flow around the front wheels. Many cars already have such; IIRC, we called them spats in the gen2 days. These are bigger. I don't think they actually hurt things enough at low speeds to matter. In that case, the active part is likely to allow them in an ideal spot while not being in the way for parking and steep entry ways. Hyundai and Kia Introduces ‘Active Air Skirt’ to Help EVs Go Further | CleanMPG
Another item Hyundai/KIA do on their cars that is rarely noticed or mentioned- is installed undercarriage vehicle shields. Am familiar with the way most manufacturers do their vehicles but until I bought my first KIA and then Hyundai I wasn't aware of how thoroughly they enclose all parts of the undercarriage. A tremendous amount of effort to improve aerodynamics go into these vehicles. This also is doing wonders to prevent corrosion and filth on our vehicles undercarriage..
Just found out Rams have active air dams. The difference here is likely in these just being 'spats' that only block the wheels. The EVs have a flat belly, so don't need a dam covering the entire width of the car. Maybe they also drop lower relative to car ground clearance.
