I've long believed that property tax on vehicles should be, in part at least, based on fuel efficiency/engine size to help lower that long term demand.

In any event, where would the funds come from for this incentive packaging?  What would we sacrifice, as a society, to do this?

Now, if we were willing to start taxing gasoline in a serious (escalating) way and use a portion of the resources to help drive energy efficiency in the vehicle fleet, perhaps that would do it. On the other hand, amid screaming outrage (and real pain) over escalating gasoline prices (all over the globe), does anyone see the US political will for a serious move to augment gasoline taxes?

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