Besides reducing greenhouse gas emissions, using potential energy cost saving technologies can bring about additional positive externalities to society as well, leading to more efficient energy use reducing your life cycle energy bills.
While electric vehicles remain a niche market due to high investment costs, some of those additional benefits that are much more tangible such as local air pollution and urban heat might be hidden to consumers. Making such positive and negative externalities more salient can help to overcome behavioral and other barriers to optimal energy technology adoption from a societal point of view.