Hi OG - Apart from your political rant - Exactly what point are you trying to make.
I'm making an abstract point that it is crazy.
Horatio has since made a couple of good points that i entirely agree with.
A lot of people who buy cars with good fuel economy do so because they do lots of miles, probably a lot more than, for example, Missus OG in the Grandis - so let's say somebody in their frugal clio diesel does 20,000 miles in a year rather than her 5 or 6,000, chances are they are causing more environmental damage than her so why should I pay more Road Tax.
We're already paying over 70% tax on the fuel we use so those who use more pay more, this is political crap, not something that will help the environment.