Seems to me that chances are the vast majority of classic cars asset value will drop considerably if/when climate change thinking/legislation may evolve as I imagine, though over what period of time, I have not a clue, but perhaps sooner than many might care to contemplate..?
I'm sure this is so.
In a similar vein,

& I were seriously thinking of buying a property in the French Caribbean. The current hysteria about air travel has made us re-think this idea, as for it to wash it's face we'd be relying on fresh tourists jetting in every week. If the next 10 years (the period over which we would finance it) see major changes to the social acceptability and/or affordability of flying long distance then we could find ourselves owning a white elephant. And after all, it's not something that we actually NEED to do.