A good bit of information about Plug-in Hybrids can be found at Wikipedia.
http://en.wikipedia.org/wiki/Plug-in_hybrid
Using the grid, the cost to power a plug-in hybrid is 1/4 the cost of gasoline (and that was at the time this article was written - I read it quite some time ago). With solar panels on the roof, one can certainly guess that it'll eventually cost less than that. Yes, there is the problem of the cost of the solar panels, but that's a whole 'nuther issue.
Read further in the article, to the section titled, "Patent encumbrance of NiMH batteries" and you'll see that Big Oil has already gotten it's paws on the technology.
No, it's not a perfect system, but Plug-in Hybrids are probably the best short term solution.
- The technology already exists.
- It's a familiar transition for most of our citizens.
- It's said that if we changed over to P-I Hybrids, our consumption would decrease by 9 million barrels a day, or 70% of our current imports.
No, it's not going to solve the problem, but the sad thing is that no one thing will. This may very well be the best way to start down that path.