"I would sell it, but then someone else would presumably actually use it. So instead, it sits there in the drive."
It sounds like it could be, but seriously? a) who talks to people like this and b) would actually do something that silly, spend money to keep something to grandstand on the fact that you are saving the earth by owning something to prevent others from using it.
Surely you could do something else with your time and money to further your goals and 'values' that would be far more productive. Such a strange mentality.