Car cover finally got here.
Has vents over the blower areas, and a little door to allow the charging cable to pass through - but it kinda blows up like a hot air balloon while the fans are running. I kept waiting for it to take flight.
Not sure how much I will ever use it while charging. But it should allow me to park in outdoor parking lots without the sun fading the paint. Might keep away some potential molesters too.