The ideal with self-driving cars is that they're basically a fleet of taxis which are either constantly moving or parked in some central garage. Airplanes deal

The ideal with self-driving cars is that they're basically a fleet of taxis which are either constantly moving or parked in some central garage. Airplanes deal with far worse sensor icing conditions every day. It's a problem that needs to be considered, but not a terribly complicated one. Cars have had heated windows for decades.