looking at the all matt black prototype and remembering that the heat from batteries and posibly even the A/C system are supposed to dissapate all excess energy from micro colant channels threwout the vehicles outer skin.
is anyone else concerned that this will be impossible to achieve on a hot day in direct sunlight. ive reserved the Sol white color just for that reason and was considering painting/wrapping the upper side of the car between the solor cells to help whith heat dissipation.
as far as the increas in drage from a radiator, i would prefer the simplicity and reliablilty especially in hotter climates where it may prove better for batery degradation and charging speed.
The cooling will be on the under belly of the Aptera. The top is only for gathering heat for the batteries in winter.