Those little wind cups are the kind you find on home weather stations and are intended to be on the roof of a house.

They were never designed to be at risk from low hanging trees, birds in flight, or high speed winds such as when driving. Other than protecting it with a 1/4" wire rod cage to prevent physical damage while allowing the flow of wind I can't imagine any other choice since it is likely there is some electronic way of measuring wind speed built into the circuitry rather than a simple open or closed circuit.

Don't get me going on converters building ever more complex and costly to maintain coaches. The list of things people can be expected to spend serious dollars on to maintain a coach keeps getting longer and longer and as the market value of coaches goes down due to the age of these coaches owners who buy these are just not going to spend the dollars necessary and there is going to be a lot of junk in the marketplace.

If our coach chassis is supposed to be this theoretical million mile coach, then the stuff that goes into making it into a motorhome should at least be made with the same focus on long durable service.