One of the reasons for this type of tax is due to hybrids and other fuel efficient vechicles. These vechicles use less taxed gas. Less taxed gas=less road monies. However, you would still have roads being used by the hybrid vechiles. THe question becomes how do you fund the roads that we need without the gas tax.

Here is a good article from Oregonhttp://seattletimes.nwsource.com/htm...agetax05m.html