AP Interview: Transportation secretary says taxing how much we drive may replace gasoline tax -- Newsday.com Poor Democrats. They want nothing more than fuel efficiency but when it affects their "income" they don't like it so much. Barry's guy wants to have a mileage tax not a gas tax because of fuel efficiency. "Among the reasons for the gap is a switch to more fuel-efficient cars and a decrease in driving that many transportation experts believe is related to the economic downturn. Electric cars and alternative-fuel vehicles that don't use gasoline are expected to start penetrating the market in greater numbers." Here's a hint, Barry - if you want to encourage fuel efficient cars, don't f*ck people over who get them by changing the rules of taxes. You want fuel efficiency, you're getting it - now suck it up and deal with the consequences. I can't want to see how they deal with the unintended consequence of an even more shrinking economy when they pile on more carbon emissions regulations.