Sorry , Robert, your proposals are totally inadequate. A 50% increase in prices spread over 5 years will reduce car mileage by about 10%. In France taxes are 70% of the pump price. You need to aim for at least $11.50 in the US just for starters. Then increase substantially each year.

By so understating the size of change really needed you are just breeding more complacency.

I disagree. The problem is defining the problem your trying to solve.

Now with that lets talk about the solution.

I'd say its Equitable ELP or shared ELP in other words the goal is sustainable economies that are energy neutral with a decent living standard for all. Obviously somehow population levels have to be brought into the issue but maybe this can be done by determining carrying capacity and developing target population levels.

A important detail but to move on.

Next you have to determine the time period in which to reach these goals. Communist style 5-10-20 year plans are a good way to at least talk about when to do things.

Then you talk about what to do.

From this approach it becomes obvious that one of the biggest problems is why are people driving all over the place in the beginning ? We need to focus on our work habits first and foremost since most of our energy expense is related to work not leisure. Can companies get satellite offices subsidized so workers can shorten their commutes ?

Can we get a national law to support commuters that take public transport ?
So instead of increasing taxes for roads. You decrease taxes for those that use public transport and redirect current taxes to fund public transport.
So say 50% of current taxes used for roads gets redirected to public transport.
Lightly traveled roads are privatized and taken out of the public domain. Same with the interstate system. We have good ways to collect tolls electronically and these can readily be made better. So toll collection should not interfere with traffic flow. This can be tied into GPS and if you put your route in you can calculate the tolls.

If you allow credit then people that don't pay their toll bill can have their cars confiscated.

By privatizing the roads we force the costs off the cities and onto the users.

You do the same for all the old infrastructure electric/sewage etc for suburbia. If you can really afford it then you get to use it.