The Aptera Forum
Dancor, this recorded Zoom call includes a discussion about how it works (Unique tech developed by Aptera): https://www.youtube.com/watch?fbclid=IwAR2pwu_PLRU1F4W1WNKKWD6iKZ0ZZkjVTrDT587Bxg57G9umYdzAC3-q0I8&v=g590xHAmsxU&feature=youtu.be
In published comments the founders described how they cool the car without any traditional radiators. Why? Because tradional radiators are a big source of additional drag to a car's body. Instead, they revealed last week in a video that they embed molded "microfluidic channels" in the body skins, pumping coolant through them, similar to the way animals shed heat through their skin. These channels are in the belly, the sides and in the roof, cooling the solar panels. Steve Fambro mentioned that he can sometimes see the microchannel patterns show on the side skin as condensation patterns. How cool is that!
Cooling with no extra drag! It's not easy to reach a coefficient of drag of 0.13!
Even so, some small air vents do exist to let fresh air into the cabin and eliminate windshield condensation. They are just below the windshield, where the wipers hide. An exhaust hole can be seen by the license plate.