This displeases Kevin and Lena (Mr. Gupton and Ms. Dickinson), a buppie couple who are worried about the effect that such a renovation would have on the "historical value" of the neighborhood.
Many analyses, though, suggest that, to have an appreciable effect on the oil sector, carbon taxes would have to be quite high in the neighborhood of two dollars on a gallon of gasoline precisely because today there are no readily available substitutes for gas or diesel or jet fuel.