The Metropolitan Transportation Commission of San Francisco is behind the idea and has said that the tax would work by installing mandatory GPS units into cars to track the miles that they travel. The vehicle owners would then be charged accordingly.
If you are not outraged, then you must be dead. There are SO many things wrong with this.
First, the tax, itself. In a country where we are supposedly free to come and go as we please, we would now be charged a tax. A tax to visit your kid in college, or a sick Mom. A tax to go on vacation - or even to go to work!
Next: GPS doesn't just tell the number of miles - it would also allow the government to track every place you go, when you go and how often. A clear violation of privacy, not to mention a violation of the Constitution - it could end up being used in court against you - you would virtually be testifying against yourself. Moreover, this information in the wrong hands could be used against you in any number of ways. It is spying, clear and simple.
And then there is the unfairness of it. People who live in the city and use public transportation get off scot free, but the poor sap who has to commute 50 miles one way will get socked twice - first, the cost of gas, and then the "driving tax". We often do not get to choose how far our place of employment will be from our home.
But leave it to the brain-dead, socialist liberals of California, and most especially San Francisco (Pelosi's home town) to try something like this. There are two ways to address financial shortfalls - cut spending or increase income. And liberals always refuse to even consider cutting spending - they would rather drive their bus into the ocean than give up all those worthless little "freebies" they give themselves. To them, the only answer is to steal from the people so they can keep their silly little projects going and pay for all the stupid, meaningless tripe like tunnels for turtles and free college for illegal immigrants.