sorry if this is a bit abrupt but this is a pet hate of mine. It eal p@$@$s me off when people "prove" a particular approach wont help because it wont fix the whole problem or replace a whole system. This approach is used by skeptics and industry to debunk alternative energy all the time, eg "solar wont help because you cant replace the whole grid with solar it would take 7,244,256,675,451 sq miles of panels." I dont think even the most pro solar or anti suv person who would actually claim that their one approach will solve every single problem.
But, with a combination of substantial decrease in consumption, abolition of large vehicles except where need is shown eg farming, not soccer practice. Substantial increase in wind, solar, gothermal, tide, wave, biomass and biofeul use. A government car trade in program where old inneficient vehicles are taken off the road on the condition that the money is used to buy an efficent vehicle. One very good idea i think (difficult to regulate though) is that commercial power at home be only used for essential uses eg. refrigeration, lighting, heating and cooking. Anyone who wants any more must contribute an equivalent amount of power back to the grid fom either solar or small wind turbine. This allows people to continue having the luxuries, but forces them to be conscious of their consumption.
We currently use 9 million bpd of gasoline, yet fom the point it leaves the ground to the point it goes into you car, the average peson will not see a drop of it, this kind of "invisible" energy use is highly abuse prone.
I dont disagree that it is hard, possibly unpleasant for many, but it is the only sustainable way.
Ps. that solar array statistic was 74.5% made up.
Im sure many of you have read these but the Union of Concerned scientists Clean Energy Blueprint, and the Amory Lovins Winning the Oil Endgame studies poviding significant ways to massively power down without destroying ou way of life. Combine these twom and theres a convincing argument of a future for us.