With the unconventional shape of the Aptera, I'd imagine driving it through a car wash might pose some difficulties. Typically wax is applied to help protect the paint from the sun, and with the solar option where leaving the car outside in the sun would be desirable, one would imagine that the paint job might be more susceptible to solar UV induced damage. If one were to apply commercially available car waxes, chances are that some will get on the solar panels -- and if a commercial car wash service is used, this is likely to be unavoidable / inevitable.
Is getting auto wax on solar panels a good idea?
What would be the solar efficiency impact of having a wax layer?
I work on the marine industry. We use a product called 303 as a UV protectorent that works well.