Collectivists would rather penalize people for exercising individual choice. Actually, there is no limit to the taxes they would heap on gasoline, or cigarettes, or coal, or cholesterol, or whatever else becomes the politically incorrect item de jour. We'll leave it to these dreamers, who are adept at devising ways to extract money from others, how best to put some back in their pockets.
Ingenious solutions abound.
The U.S. elites might set a standard, perhaps 15,000 miles per year, and then pay everyone an amount for every mile driven less than that. We just thought we would throw out this idea for those who are devising the city's long-range transportation policy. Enter words describing a concept or keywords.