In article <timmcn-34B0CD.09002708012009@news.iphouse.com>,
Tim McNamara <timmcn@bitstream.net> wrote:

> The damage each driver causes to the roads is based on how many miles
> they drive and only vaguely on how much gasoline they burn; from that
> perspective a mileage tax makes more sense than a gasoline tax.

In one of my college economics classes way back when, the professor
discussed the fairness of weighing your salad bar puchase and paying per
ounce vs. per plateful. Interestingly enough, many students used the
"it's not fair" cry on the per ounce method...