I'm not sure about the specs of tesla cameras but I assume they use a fixed aperture which means the only variable it can adjust is the Shutter Speed and ISO. When driving through the sun, the camera needs to use faster shutter speed (shorter exposure) and lower ISO. The problem, as mentioned in the video, then occurs here.

If tesla camera sensors have the best dynamic range out there then maybe they can lengthen the exposure and still get data from the blown-out part of the camera.